The First Scientist: Anaximander and his legacy

  • Thread starter Thread starter marcus
  • Start date Start date
  • Tags Tags
    Scientist
Click For Summary
Anaximander, a pre-Socratic philosopher from Miletus, is recognized as a pivotal figure in the history of science for proposing that natural phenomena can be explained by laws rather than myths. His theories included the concept of the Earth floating in space and the idea of the "apeiron," an unbounded source from which all things emerge. Anaximander's approach to causality emphasized symmetry and balance, laying groundwork for future scientific thought. The upcoming book "The First Scientist: Anaximander and His Legacy" by Carlo Rovelli aims to highlight Anaximander's contributions and their significance in shaping Western scientific tradition. This work seeks to restore Anaximander's rightful place in the narrative of scientific development.
  • #31
Given that this is turning into the longest teaser campaign for a book ever, you can read my own page summarising Anaximander's worldview at...

http://www.dichotomistic.com/logic_dichotomies_history_one.html

Or a good academic source is Anaximander and the Origins of Greek Cosmology by Charles Kahn.
 
Physics news on Phys.org
  • #32
A young Dutch expert on Anaximander I just now was thinking of is Dirk Couprie.
I will hunt up his website. He has a book out too, but a website is quick and free.
http://www.dirkcouprie.nl/home.html

Dirk says:
"My main professional interest is in Presocratic philosophy and cosmology, and especially those of Anaximander, who lived at Miletus, 610-547 B.C."

and he gives some links:

"For more information on my latest book Heaven and Earth in Ancient Greek Cosmology: From Thales to Heraclides Ponticus click here.
Here is a special link to my article on Anaximander in The Internet Encyclopedia of Philosophy."
 
Last edited:
  • #33
apeiron said:
Given that this is turning into the longest teaser campaign for a book ever, you can read my own page summarising Anaximander's worldview at...

http://www.dichotomistic.com/logic_dichotomies_history_one.html

Or a good academic source is Anaximander and the Origins of Greek Cosmology by Charles Kahn.

Apeiron, great to hear from you! I got out Charles Kahn's book from the library a couple of months back and dipped into it. There is also a young Dutch historian of science who has been studying Anax and thinking about his importance---he has a website, I put his name (Dirk Couprie) and a link to his website in the preceding post.

I like very much how you start your page. Ionia was the birthplace of rational thinking for many reasons. It is worth quoting bold blue:Greek philosophy began some two centuries before Athens in the scattered city states and colonies of Ionia, now the coast of Turkey. Ionia was the birthplace of rational thinking for many reasons.

The great civilisations of Mesopotamia, Egypt and the Indus had been agriculture-based, inward-looking, feudal and bureaucratic. The Ionian cities survived on fishing and trading. They were ruled by laws rather than kings. They had a wealthy merchant class who traveled widely. And by this time – around the 7th century BC – there was writing to record people’s ideas.

These first thinkers also had the advantage that they could come at the problem of existence with an utterly fresh eye. To use a memorable phrase, they saw: "the world lit by a kind of six-o'clock-in-the-morning light and the dew imperishably on the grass."

There were many famous Ionians - Thales, Pythagoras, Heraclitus, Parmenides, Zeno, Empedocles and Democritus are just some of them. Thales is conventionally considered the very first philosopher. But I would rather accord that honour to Anaximander of Miletus.


from Apeiron's http://www.dichotomistic.com/logic_dichotomies_history_one.html
 
  • #34
I was mistaken about Dirk Couprie's age, when I posted earlier. For some reason I had gotten the idea that he was an under-40 scholar. He was born in 1940!

marcus said:
A young Dutch expert on Anaximander I just now was thinking of is Dirk Couprie.
I will hunt up his website. He has a book out too, but a website is quick and free.
http://www.dirkcouprie.nl/home.html

Dirk says:
"My main professional interest is in Presocratic philosophy and cosmology, and especially those of Anaximander, who lived at Miletus, 610-547 B.C."

and he gives some links:

"For more information on my latest book Heaven and Earth in Ancient Greek Cosmology: From Thales to Heraclides Ponticus click here.
Here is a special link to my article on Anaximander in The Internet Encyclopedia of Philosophy."

When I posted earlier I did not have a working link to his article on Anaximander in the Internet Encyclopedia of Philosophy. I will hunt up one.
http://webcache.googleusercontent.com/search?q=cache:MAklZI346aYJ:www.iep.utm.edu/anaximan/+Couprie+Anaximander+Internet+Encyclopedia&cd=1&hl=en&ct=clnk&gl=us&client=safari&source=www.google.com

The regular IEP site is temporarily not responding.

I think Couprie's IEP article on Anaximander is quite helpful. He has also written a book, with two other historians of science, called "Anaximander in Context".

He also has a bibliography on Anaximander. Lengthy interesting list of writings.
http://www.dirkcouprie.nl/Anaximander-bibliography.htm
From the looks of it, the field of Anaximander Studies is expanding :biggrin:
 
Last edited:
  • #35
Until recently the UK Amazon page for the new Anaximander book contained an error. Which fooled me. UK said the book was already on sale there and estimated it would take 12-14 days to fill the order. As of today they've corrected that mistake.

Also the cover design has been changed. The publisher's page shows a much better cover design than, say, a week ago. Piece of actual Greek stone carving: face of Anax in relief, with his name scratched at the top in what might be Attic caps.

I'm thinking the book will probably actually be out next month.

marcus said:
US publisher's page still gives September 2011 as their estimated date the book will appear
http://www.westholmepublishing.com/thefirstscientist.html

The Amazon.com page has the earlier estimates August 2011 (I'm inclined to think the later date more realistic.)
https://www.amazon.com/dp/1594161313/?tag=pfamazon01-20

The book is already on sale in the UK!
http://www.amazon.com/dp/1594161313/?tag=pfamazon01-20

I'll carry along some other links and information for any interested newcomers:
Canadian Amazon page:
http://www.amazon.com/dp/1594161313/?tag=pfamazon01-20

French publisher's page for the 2009 edition:
http://www.dunod.com/sciences-techn...ciences-de-la-matiere-et-/anaximandre-de-mile

Amazon.fr page:
http://www.amazon.com/dp/2100529390/?tag=pfamazon01-20

French edition TOC with sporadic rough interpretive translation:
Sommaire Introduction.

1. Le VIe siècle.==The Sixth Century BCE
Un panorama du monde.
Le savoir du VIe siècle : l’astronomie.==Science in the Sixth Century: Astronomy
Les dieux.==The Gods
Milet.==The City of Miletus

2. Les contributions d’Anaximandre. ==Anaximander's Contributions

3. Les phénomènes atmosphériques.==Meteorology (Understanding rain, thunder,..)
Le naturalisme cosmologique et biologique.==Naturalism in Cosmology and Biology

4. Flotte la Terre.==The Earth Floats in Space==Earth Adrift in Space (not needing to be anchored to supports)

5. Entités invisibles et lois naturelles.==Invisible Entities and Natural Laws
Y a-t-il dans la nature quelque chose que nous ne voyons pas?==Can Unseen Stuff Help Explain?
L’idée de loi naturelle : Anaximandre, Pythagore et Platon.==The Idea of Natural Law (Originated with Anax. Pyth. Plato)

6. Quand la révolte devient vertu.==(Rational) Revolt Becomes Respectable

7. Écriture, démocratie et mélange des cultures.==Writing, Democracy, Crossfertilization
La Grèce archaïque
L’alphabet grec.
Science et démocratie.==Science and Democracy (Are Related)
Le mélange des cultures.==Cultural Mixing

8. Qu’est-ce que la science?==What Characterizes Science?
Penser Anaximandre après Einstein et Heisenberg.==Significance of Anax'der's Thought Seen Post-GR and QM, i.e. from Post-Einstein-Heisenberg Perspective (!)
L’effondrement des illusions du XIXème siècle.==Collapse of 19-th Century Illusions(!)
La science ne se réduit pas à des prédictions vérifiables.==Real Science Can Not Be Reduced To Testable Predictions (!)
Explorer les formes de pensée du monde.==Exploring How to Think the World
L’évolution de l’image du monde.==Getting a New Picture of the World
Règles du jeu et commensurabilité.==Rules of Play--Continuity of Understanding
Éloge de l’incertitude.==Best Understanding Recognizes Uncertainty

9. Entre relativisme culturel et pensée de l’absolu. Navigating Between Cultural Relativism and the Absolute-Avoiding Dangerous Foolishness on Either Side.

10. Peut-on comprendre le monde sans les dieux?==Can We Get Along Without Gods?
Le conflit.

13. La pensée pré-scientifique.==Pre-Scientific Thought
La nature de la pensée mystico-religieuse. Les différentes fonctions du divin.

14. Conclusion : l’héritage d’Anaximandre==Anaximander's Legacy to UsThe English edition publisher says the book is 256 pages. For a rough guess about material being added one can compare with the French edition, which is listed as 192 pages. Some of the difference could be due to other factors such as typesize.
However it would be natural for changes, revisions, additions to have occurred in the intervening 3 years and to appear in the English edition.

Charles Kahn, in his book "Anaximander and the Origins of Greek Cosmology" has a photo of this relief portrait and says "probably early Roman Empire after Hellenistic original". The fragment is in the Museo Nazionale Romano.
That would make sense. The Romans copied enormous amounts of Greek artwork. And I can imagine Greeks of the Hellenistic period making artist-conception portraits of famous philosophers. The Hellenistic period in history was started by a guy who had Aristotle for his private tutor.

I can't decide whether to call it mezzo-relievo or alto-relievo. I think it is mid-relief. No complete undercutting of the head.
The cover photo of this mid-relief portrait seems to have been clarified with photoshop, or else taken with very good lighting---I'm glad to say.

Not sure what "early Roman Empire" means in context of Charles Kahn's caption. Romans conquered Macedonia around 170 BCE. Alexander Great died around 330 BCE, he created a kind of Hellenistic cooperative sphere of influence (not exactly an empire). What would you say the dates are for the Hellenistic period? 330-170 BCE? Or more broadly 350-100 BCE?

So maybe this Roman copy of head and torso Anaximander was done in 100 BCE. The Hellenistic period original might for example have been made during the lifetime of Archimedes 287-212 BCE.

That was a time when Greeks determined the circumference of the Earth accurately to within 2%. (Eratothenes in Alexandria) and discovered that the sun was much farther away than the moon (more than 10 times farther, perhaps 20, Aristarchus on Samos, born 300 years after Anax, in 310 BCE)
 
Last edited by a moderator:
  • #36
In case of interest here is an excerpt of an online resource:
Timeline related to Greek Science and Technology

800 BCE
Vowels were by the Greeks to consonants of Phoenician origin.

610 BCE
Birth of Anaximander of Miletus.

About 600 BCE
Thales of Miletus (Θαλής ο Μιλήσιος ) arguing from the fact that wherever there is life, there is moisture, speculated that the basic stuff of nature is water, according to Aristotle. He brings Babylonian mathematical knowledge to Greece and uses geometry to solve problems such as calculating the height of pyramids and the distance of ships from the shore.

About 600 -501 BCE
Sun dial (gnomon) in use in Greece and China.
Theodorus of Samos credited with invention of ore smelting and casting, water level, lock and key, carpenter's square, and turning lathe.
First water supply system in Athens has nine pipes leading to main well.

About 585 BCE
Thales of Miletus predicts a solar eclipse.

About 560 BCE
Anaximander (Αναξίμανδρος ο Μιλήσιος ) proposes that the Earth floats unsupported in space. Its surface is cylindrical. The “author of the first geometrical model of the world...” Charles Kahn Anaximander and the Origins of Greek Cosmology

About 530 BCE
Pythagoras (Πυθαγόρας ο Σάμιος ) discovered the dependence of musical intervals on the arithmetical ratios of the lengths of string at the same tension, 2:1 giving an octave, 3:2 the fifth, and 4:3 the fourth. He is also credited with a general formula for finding two square numbers the sum of which is also a square, namely (if m is any odd number), m2+{1/2(m2-1)}2={1/2(m2+1)}2. "The Pythagoreans and Plato [as well as the Renaissance Neo-Platonists] noted that the conclusions they reached deductively agreed to a remarkable extent with the results of observation and inductive inference. Unable to account otherwise for this agreement, they were led to regard mathematics as the study of ultimate, eternal reality, immanent in nature and the universe, rather than as a branch of logic or a tool of science and technology" (Boyer 1949:1). Consequently, when the Pythagoreans developed the theory of geometric magnitudes, by which they were able to compare two surfaces' ratio, they were led, for lack of a system which could handle irrational numbers, to the 'incommensurability problem': Applying the side of a square to the diagonal, no common rational measure is discoverable.

Pythagoras proposes that sound is a vibration of air.

About 510 BCE
Almaeon of Crotona (Αλκμαίων ο Κροτωνιάτης ) a member of the Pythagorean medical circle, located the seat of perception in the brain, or enkephalos, and maintained that there were passages connecting the senses to the brain, a position he was said to have arrived at by dissections of the optic nerve.

About 500 BCE
Water system built by Eupalinus (Ευπαλίνος ο Μεγαρεύς) on Samos, three-quarter-mile-long tunnel, 20 meter deep, started simultaneously at both ends. Herodotus consider this as one of the three greatest Greek constructions.

About 500 BCE
Xenophanes examined fossils and speculated on the evolution of the earth.
Alcmaeon, Greek physician, discovers Eustachian tubes c. -500

479-431 BCE
Golden Age of Athens

About 465 BCE
Hippasus ('Ιππασος ο Μεταποντίνος) writes of a "sphere of 12 pentagons", which must refer to a dodecahedron

About 450 BCE
Anaxagoras of Athens taught that the moon shines with the light of the sun and so was able to explain the eclipses.

About 440 BCE
Leucippus of Miletus said that the world consisted in the void and atoms, which are imperceptible individual particles that differ only in size, shape, and position. That these particles were imperceptible meant they met Parmenides' objection to the Pythagorean's geometric points and, since they alone were unchanging, change could be explained as mere sense impressions. "It is scarcely an exaggeration to say that even in 1900 the only new idea to Leucippus's theory was that each chemical element was identified with a separate atomic species" (Park 1990:41).

Oenopides of Chios (Οινοπίδης ο Χίος) probably created the first three of what became Euclid's 'postulates' or assumptions. What is postulated guarantees the existence of straight lines, circles, and points of intersection. That they needed to be postulated is because they require 'movement,' the possibility of which was challenged by the Eleatics (Szabó 1978:276-279).

About 430-440 BCE
Hippocrates of Chios squared the lune, a major step toward squaring the circle, probably using the theorem that circles are to one another as the squares of their diameters. He writes the Elements which is the first compilation of the elements of geometry

Hippias of Elis (Ιππίας ο Ηλείος) invents the quadratrix which may have been used by him for trisecting an angle and squaring the circle.

Prior to about 425 BCE
Herodotus wrote the first scientific history; that is, he began by asking questions, rather than just telling what he thinks he knows. Moreover, these questions were "about things done by men at a determinate time in the past, [and the history itself ] exists in order to tell man what man is by telling him what man has done" (Collingwood 1946:18).

About 425 BCE
Theodorus of Cyrene (Θεόδωρος ο Κυρηναίος) shows that certain square roots are irrational. This had been shown earlier but it is not known by whom.

Thebans use a flame-thrower at Delium.

About 420 BCE
Democritus of Abdera (Δημόκριτος ο Αβδηρίτης) developed Leucippus's atomic theory: Atoms vibrate when hitched together in solid bodies and exist in a space which is infinite in extent and in which each star is a sun and has its own world. He also produced two major concepts in the history of ideas concerning the brain--that thought was situated there and, anticipating the nervous system, that psychic atoms constituted the material basis of its communication with the rest of the body and the world outside. Socrates, and hence the Platonic school, followed Democritus in locating thought in the brain.

About 387 BCE
Plato founds his Academy in Athens

About 375 BCE
Archytas of Tarentum develops mechanics. He studies the "classical problem" of doubling the cube and applies mathematical theory to music. He also constructs the first automaton.

About 370-360 BCE
Eudoxus of Cnidus invented a model of twenty-seven concentric spheres by which he was able to calculate the sun's annual motions through the zodiac, the moon's motion including its wobble, and the planets' retrograde motion. He used what came much later to be called the 'exhaustion method' for area determination. This method involved inscribing polygons within circles, reducing the difference ad absurdum, and was wholly geometric since there was at that time no knowledge of an arithmetical continuum, at least among the Greeks.

About 340 BCE
Aristaeus writes Five Books concerning Conic Sections.
Praxagoras of Cos discovers the difference between arteries and veins.

About 335 BCE
Strato, experiments with falling bodies and levers.

About 330 BCE
Heraclides of Pontus said that the Earth turns daily on its axis "while the heavenly things were at rest..., considered the cosmos to be infinite..., [and] with the Pythagoreans, considered each planet to be a world with an earth-like body and with an atmosphere" (Dreyer 1906:123-125). He also suggested that Mercury and Venus have the sun at the center of their spheres.

Pytheas navigated the British Isles and the northern seas and upon returning home wrote about an island that he called Thule or Ultima Thule

Aristotle, describes image projection in terms of the camera obscura

About 325 BCE
Alexander orders his admiral, Nearchus, to explore the Indian Ocean, Persian Gulf, and Euphrates

Pytheas, tides are caused by moon

330 BCE ??
Diving bell used

About 320 BCE
Eudemus of Rhodes writes the History of Geometry.

About 314 BCE
The first reference to the pyroelectric effect by Theophrastus who noted that tourmaline becomes charged when heated.

310 BCE
Birth of Aristarchus of Samos.

About 300 BCE
Eukleides, better known as Euclid, published his Elements, a reorganized compilation of geometrical proofs including new proofs and a much earlier essay on the foundations of arithmetic. Elements conclude with the construction of Plato's five regular solids. Euclidean space has no natural edge, and is thus infinite. In his Optica, he noted that light travels in straight lines and described the law of reflection.

About 300 BCE
Dicaiarch of Messina (350-290 BCE), Greek geographer introduces to the map making world the notion of latitude and longitude

About 290-260 BCE
Aristarchus of Samos, in On the Sizes and Distances of the Sun and Moon, used trigonometry to estimate the size of the Moon and its distance by the Earth's shadow during a lunar eclipse. Archimedes and others said that he maintained that the Moon revolved around the Earth and the Earth around the Sun which remained stationary like the stars.

287 BCE
Birth of Archimedes (Αρχιμήδης ο Συρακούσιος)

276 BCE
Birth of Eratosthenes

About 270 BCE
Greek inventor Ctesibius of Alexandria includes gearing in clepsydras

About 260-250 BCE
Archimedes of Syracuse contributed numerous advances to science including the principle that a body immersed in fluid is buoyed up by a force equal to the weight of the displaced fluid and the calculation of the value of pi. "His method was to select definite and limited problems. He then formulated hypotheses which he either regarded, in the Euclidean manner, as self-evident axioms or could verify by simple experiments. The consequences of these he then deduced and experimentally verified" (Crombie 1952:278). Description of the Loculus of Archimedes; Archimedean Polyhedra; Volume of Intersection of Two Cylinders; Archimedes' Cattle Problem. Principle of the lever , discovery of the principle of buoyancy

About 245 BCE
Callimachus of Cyrene, a scholar and librarian at the Library of Alexandria, "created for the first time a catalog of Greek literature covering 120,000 books, called the Pinakes or Tables

About 240 BCE
Eratosthenes of Cyrene calculated the diameter of the Earth by measuring noontime shadows at sites 800 km. apart. Assuming the Earth is a sphere, the measured angle between the sites is seven degrees and the circumference is about 50 times 800 km., or about 40,000 km.

About 230 BCE
Eratosthenes of Cyrene develops his sieve method for finding all prime numbers.

Before the end of the third century BCE
Astrolabes were in use for taking the angular distance between any two objects, usually the elevation in the sky of planets.

In the early second century BCE
Diocles, in On Burning Mirrors, proved the focal property of a parabola and showed how the Sun's rays can be made to reflect a point by rotating a parabolic mirror (Toomer 1978).

About 225-210 BCE?
Apollonius of Perga writes Conics. He introduced probably first the terms 'parabola' and 'hyperbola,' curves formed when a plane intersects a conic section, and 'ellipse,' a closed curve formed when a plane intersects a cone.

About 134-127 BCE
Hipparchus of Rhodes (Ιππαρχος ο Ρόδιος ) measured the year with great accuracy and built the first comprehensive star chart with 850 stars and a luminosity, or brightness, scale. He is credited with the discovery of the precision of the equinoxes, and seems to have been very impressed that either of two geometrically constructed hypotheses could 'save the appearance' of the path that a planet follows: One shows the planets moving in eccentric circles and the other moving in epicycles carried by concentric circles (Duhem 1908:8).

THANKS to a German website "miahanas". Much of the timeline is taken from there and edited down to fit in one normalsize post. http://www.mlahanas.de/Greeks/HistoricEvents.htm
 
Last edited:
  • #37
marcus said:
In case of interest here is an excerpt of an online resource:
Timeline related to Greek Science and Technology

Thank you marcus - for this wonderful timeline.
 
  • #38
  • #39
Very interesting, indeed. Thank you, Marcus.
 
  • #41
WhoWee, Fuzzyfelt, Apeiron, you might be interested in watching this short YouTube about the Antikythera device.
A scientist/historian/craftsman named Michael Wright made a lifesize working model. He operates the reconstructed device and explains it.


Eclipses get predicted by a spiral dial. Planets go around at varying speeds and do their proper retrograde motion (as seen from the earth.) It's "high Greek science"--very neat.
 
Last edited by a moderator:
  • #42
I didn't appreciate the complexity of the device until viewing this video.
 
  • #43
I want to appreciate how fast the Aegean science tradition developed after it got started around 600 BCE. Arithmetic is a lot easier for me, intuitively, going forward so I am going to repeat some of the earlier timeline starting the yearcount around 600 BCE.

According to Wkpd, Thales was born in 624 BCE so he would have been 24 years old in 600 BCE when I start the count. It impressed me to see how fast things took off after that. I'm going to call the yearcount "AET" for "Aegean explanatory tradition". If that's too long to say, just call it "Aegean time". Thales et al started a style of explanation (that we now call "natural") involving substances, material process and mechanisms instead of the Olympian pantheon. They used ideas like evaporation, condensation, celestial wheels, spheres, force, periodic motion, and they asked what causes stuff like rain thunder earthquakes lunar phases. They asked about proportions. Let's gauge how fast this developed once it got rolling.

I adapted this timeline from a German website and can't vouch for it in detail.


-200 AET (=800 BCE)
Phonetic Greek alphabet. The Ionian Greeks basically invented vowels, which the Phoenician alphabet they adopted did not have: Since Greek has fewer consonants than Phoenician, when applying the Phoenician alphabet they found they had some extra symbols left over. They assigned these unused Phoenician consonants to Greek vowell sounds.

-24 AET (=624 BCE)
Birth of Thales of Miletus, first documented searcher for systematic natural explanations.

-10 AET
Birth of Anaximander of Miletus (lived from -10 to 54 AET)

About 0 AET (=600 BCE)
Thales of Miletus (Θαλής ο Μιλήσιος ) arguing from the fact that wherever there is life, there is moisture, speculated that the basic stuff of nature is water, according to Aristotle. He brings Babylonian mathematical knowledge to Greece and uses geometry to solve problems such as calculating the height of pyramids and the distance of ships from the shore.

About 15 AET
Thales predicts a solar eclipse (probably thanks to Babylonian records, not to basic understanding, but anyway...)

About 40 AET
Anaximander (Αναξίμανδρος ο Μιλήσιος ) proposes that the Earth floats unsupported in space. The “author of the first geometrical model of the world...” Charles Kahn Anaximander and the Origins of Greek Cosmology. Proposed an explantation for rain: that it results from evaporation of water caused by the action of the sun. Proposed natural explanations for numerous other phenomena and suggested that land animals originated from sea life.

About 70 AET
Pythagoras (Πυθαγόρας ο Σάμιος; 30 to 110 AET ) discovered the dependence of musical intervals on the arithmetical ratios of the lengths of string at the same tension, 2:1 giving an octave, 3:2 the fifth, and 4:3 the fourth...Pythagoras proposed that sound is a vibration of air.

About 90 AET
Almaeon of Crotona (Αλκμαίων ο Κροτωνιάτης ) a member of the Pythagorean medical circle, located the seat of perception in the brain, or enkephalos, and maintained that there were passages connecting the senses to the brain, a position he was said to have arrived at by dissections of the optic nerve.

About 100 AET
Water system built by Eupalinus (Ευπαλίνος ο Μεγαρεύς) on Samos, three-quarter-mile-long tunnel, 20 meter deep, started simultaneously at both ends. Herodotus consider this as one of the three greatest Greek constructions.
Theodorus of Samos credited with invention of ore smelting and casting, water level, lock and key, carpenter's square, and turning lathe.
Xenophanes examined fossils and speculated on the evolution of the earth.

About 135 AET
Hippasus ('Ιππασος ο Μεταποντίνος) writes of a "sphere of 12 pentagons", which must refer to a dodecahedron

About 150 AET
Anaxagoras of Athens taught that the moon shines with the light of the sun and so was able to explain the eclipses.

About 160 AET
Leucippus of Miletus said that the world consisted in the void and atoms, which are imperceptible individual particles that differ only in size, shape, and position...
Oenopides of Chios (Οινοπίδης ο Χίος) probably created the first three of what became Euclid's 'postulates' or assumptions...

About 160-170 AET
Hippocrates of Chios squared the lune, a major step toward squaring the circle, probably using the theorem that circles are to one another as the squares of their diameters. He writes the Elements which is the first compilation of the elements of geometry

About 175 AET
Theodorus of Cyrene (Θεόδωρος ο Κυρηναίος) shows that certain square roots are irrational. This had been shown earlier but it is not known by whom.

About 180 AET
Democritus of Abdera (Δημόκριτος ο Αβδηρίτης) developed Leucippus's atomic theory: Atoms vibrate when hitched together in solid bodies and exist in a space which is infinite in extent and in which each star is a sun and has its own world...

About 213 AET
Plato founds his Academy in Athens

About 225 AET
Archytas of Tarentum develops mechanics. He constructs (the first?) automaton.

About 230-240 AET
Eudoxus of Cnidus invented a model of twenty-seven concentric spheres by which he was able to calculate the sun's annual motions through the zodiac, the moon's motion including its wobble, and the planets' retrograde motion. He used what came much later to be called the 'exhaustion method' for area determination. This method involved inscribing polygons within circles, reducing the difference ad absurdum, and was wholly geometric since there was at that time no knowledge of an arithmetical continuum, at least among the Greeks.

About 260 AET
Aristaeus writes Five Books concerning Conic Sections.
Praxagoras of Cos discovers the difference between arteries and veins.

About 265 AET
Strato, experiments with falling bodies and levers.

About 270 AET
Heraclides of Pontus said that the Earth turns daily on its axis "while the heavenly things were at rest..., considered the cosmos to be infinite..., [and] with the Pythagoreans, considered each planet to be a world with an earth-like body and with an atmosphere" (Dreyer 1906:123-125). He also suggested that Mercury and Venus have the sun at the center of their spheres.
Pytheas navigated the British Isles and the northern seas and upon returning home wrote about an island that he called Thule or Ultima Thule. Pytheas explained the tides as caused by the moon.
Aristotle, describes image projection in terms of the camera obscura.
Apparently about this time the diving bell used for work under water.

About 286 AET
The first reference to the pyroelectric effect by Theophrastus who noted that tourmaline becomes charged when heated.

290 AET
Birth of Aristarchus of Samos (lived 290-370 AET)

About 300 AET
Eukleides, better known as Euclid, published his Elements, a reorganized compilation of geometrical proofs including new proofs and a much earlier essay on the foundations of arithmetic. Elements conclude with the construction of Plato's five regular solids. Euclidean space has no natural edge, and is thus infinite. In his Optica, he noted that light travels in straight lines and described the law of reflection.
Dicaiarch of Messina (250-310 AET), Greek geographer introduces the notion of latitude and longitude in map-making.

About 310-340 AET
Aristarchus of Samos, in On the Sizes and Distances of the Sun and Moon, used trigonometry to estimate the size of the Moon and its distance by the Earth's shadow during a lunar eclipse. Inferred from observation that the Sun was much farther away than the Moon. Archimedes and others said that he maintained that the Moon revolved around the Earth and the Earth around the Sun which remained stationary like the stars.

313 AET
Birth of Archimedes (Αρχιμήδης ο Συρακούσιος; 313-388 AET)

324 NET
Birth of Eratosthenes of Cyrene (Ἐρατοσθένης ο Κυρηναίος; 324-405 AET)

About 330 AET
Greek inventor Ctesibius of Alexandria includes gearing in clepsydras

About 340-350 AET
Archimedes of Syracuse contributed numerous advances to science including the principle that a body immersed in fluid is buoyed up by a force equal to the weight of the displaced fluid and the calculation of the value of pi. "His method was to select definite and limited problems. He then formulated hypotheses which he either regarded, in the Euclidean manner, as self-evident axioms or could verify by simple experiments. The consequences of these he then deduced and experimentally verified" (Crombie 1952:278)...

About 355 AET
Callimachus of Cyrene, a scholar and librarian at the Library of Alexandria, "created for the first time a catalog of Greek literature covering 120,000 books, called the Pinakes or Tables."

About 360 AET
Eratosthenes calculated the diameter of the Earth by measuring noontime shadows at sites 800 km. apart. Assuming the Earth is a sphere, the measured angle between the sites is seven degrees and the circumference is about 50 times 800 km., or about 40,000 km.

About 370 AET
Eratosthenes develops his sieve method for finding all prime numbers.

About 375-390 AET
Apollonius of Perga writes Conics. He introduced probably first the terms 'parabola' and 'hyperbola,' curves formed when a plane intersects a conic section, and 'ellipse,' a closed curve formed when a plane intersects a cone.

Before 400 AET
Astrolabes were in use for taking the angular distance between any two objects, usually the elevation in the sky of planets.

In the early fifth century AET (i.e. the early 400s)
Diocles, in On Burning Mirrors, proved the focal property of a parabola and showed how the Sun's rays can be made to reflect a point by rotating a parabolic mirror (Toomer 1978).

About 466-473 AET
Hipparchus of Rhodes (Ιππαρχος ο Ρόδιος; c.410-480 AET) measured the year with great accuracy and built the first comprehensive star chart with 850 stars and a luminosity, or brightness, scale. He is credited with the discovery of the precession of the equinoxes, and [noted] that either of two geometrically constructed hypotheses could 'save the appearance' of the path that a planet follows: One shows the planets moving in eccentric circles and the other moving in epicycles carried by concentric circles (Duhem 1908:8).

This timeline is adapted from http://www.mlahanas.de/Greeks/HistoricEvents.htm I cannot vouch for it's accuracy. Some details would need to be checked. Corrections are welcome if anyone has some to suggest.
==========

Probably the best source for this whole development, especially the period 350-100 BCE (which would be Aegean years 250-500, through the time of Hipparchus in other words) is the book by Lucio Russo called The Forgotten Revolution.
 
Last edited:
  • #44
I just found the article on Anaximander at the IEP website. (Internet Encyclopedia of Philosophy).
http://www.iep.utm.edu/anaximan/

I knew about this, but when I tried to read it earlier the site was down. This time it was up. I really like it. Good source!

IEP has an article on Thales too. On scores of interesting people, in fact. At the top of every page there is an alphabet. Click on any letter and browse the names that begin with that letter.
 
  • #45
Thank you, Marcus, this thread is a treat!
 
  • #46
fuzzyfelt said:
Thank you, Marcus, this thread is a treat!

Thanks to you, and WhoWee as well! It's a pleasure to share an interest like this with you.

Rovelli's new book just came out!
https://www.amazon.com/dp/1594161313/?tag=pfamazon01-20
It already has one 5-star review, as I should know :biggrin:
Great book. Not only about a truly original scientific mind but also about the world of those independent coastal Ionian cities interconnected by sea (and in contact with older river-based civilizations.)
 
Last edited by a moderator:
  • #47
marcus said:
Thanks to you, and WhoWee as well! It's a pleasure to share an interest like this with you.

Rovelli's new book just came out!
https://www.amazon.com/dp/1594161313/?tag=pfamazon01-20
It already has one 5-star review, as I should know :biggrin:
Great book. Not only about a truly original scientific mind but also about the world of those independent coastal Ionian cities interconnected by sea (and in contact with older river-based civilizations.)

Good news! I'm looking forward to reading it!
 
Last edited by a moderator:
  • #48
I found more online source material about the Antikythera mechanism:
http://www.antikythera-mechanism.gr/faq/general-questions/why-is-it-so-important

There is an FAQ maintained by "The Antikythera Mechanism Research Project". It gives the estimated date of construction as "150-100BC" which in my way of numbering the timeline of science starting from the time of Thales and Anaximander would be «450» to «500».
Look back at post #43 for a sample timeline. (I decided simple angle quotes were a better way to distinguish the year-number---rather than tagging with some abbreviation like "AET".
Or at least a convenient undistracting alternative.

I noticed that the Anaximander book is selling in the Japanese market as well as more obvious English-speaking ones (Usa, UK,...)
http://www.amazon.co.jp/dp/1594161313/ ベストセラー商品ランキング: 洋書 - 508,077位 (洋書のベストセラーを見る)
780位 ─ 洋書 > History > Ancient > Greece
1428位 ─ 洋書 > History > Europe > Greece
8197位 ─ 洋書 > Science > History & Philosophy

It could be fun to try to figure this out. I think 洋書 means ENGLISH. So amazon Japan has a special category of English books and First Scientist is #508,077 just among the English books.
I think 位 means "-th" so 508,077位 means 508,077-th

And then you can see that its salesrank is 780-th among the
English>History>Ancient>Greece books.

It could be that they only HAVE 780 books in that category at Amazon.co.jp
so Rovelli's book could be at the tail end of the line :biggrin: in Japan. But it is interesting they even stock it. They seem to have a lot of English titles at Amazon Japan and a pretty good selection by my standards. More kind of educated reader stuff. which makes sense because the people who want the cruder pops would be buying books in Japanese rather than English.
[Edit: 10 hours later the rank hadn't changed much: 洋書 - 508,205位 ]
 
Last edited:
  • #49
The Antikythera Mechanism is extremely beautiful and wonderful. It was contructed on the island of Rhodes and looted by the Romans when they attacked and invaded the island. But their ship sank in a storm and they never got it back to Rome.

See these lovely YouTubes



Additional information in this as well:
http://www.youtube.com/watch?v=ZrfMFhrgOFc&feature=fvst

X-ray tomography was used to map the gear trains and it was only finally understood in 2008 what all the device calculated (moon phases, planet positions, probable eclipse years on a 63 year cycle, olympiads...)
According to Wkpd http://en.wikipedia.org/wiki/Antikythera_mechanism
Pindar the Greek poet 119±40 in his 7th Olympic ode (Epode 3) gave high praise to Rhodian craftsmanship ... But that was long before the Antikythera device was constructed.
West of Crete is the island of Kythera where Venus is said to have arisen from the sea, and a small island next to Kythera is called Antikythera. The Roman loot ship sank there in a storm on its way back to Rome.
 
Last edited by a moderator:
  • #50
http://www.libreriauniversitaria.it/cos-scienza-rivoluzione-anassimandro-rovelli/libro/9788861840751

Finally the Italian edition of Rovelli's book. I think Mondadori is Italy's largest publisher, so they may do an effective job of promotion. Get it reviewed in the media and so on. That could have some effect on the reception of the English version, I imagine.
It looks like it's now available. "Usually ships in 5 to 6 working days."

The title is different. I will give a rough translation of the publisher's description:
What is science? Anaximander's revolution.
"All human civiliizations have believed that the world consisted of Heaven above and Earth below. All but one. For the Greeks the Earth was a rock floating in space: beneath the Earth there was neither a supporting ground, nor turtles, nor the gigantic columns of which the Bible speaks.
How did the Greeks come to realize that the Earth is suspended in emptiness? Who first grasped this, and how?
The author gives us an account of Anaximander's extraordinary «scientific revolution», which Karl Popper has described as «one of the boldest, most revolutionary, and most important ideas in the entire history of human thought.» And an account of the conflict this opened up, which is still burning. Also of the nature of scientific thought, of its ability to criticize and rebel, of the force with which it subverts the order of things and our image of the world. And an account as well of how scientific knowledge can be, at the same time, extremely effective and «wrong», as the example of XX Century physics shows. To discuss Anaximander is to reflect on the meaning of the scientific revolution that began with Einstein."

Here is the Italian original:

Che cos'è la scienza? La rivoluzione di Anassimandro
di Rovelli Carlo
Tutte le civiltà umane hanno sempre pensato che il mondo fosse fatto di Cielo sopra e Terra sotto. Tutte, eccetto una. Per i Greci la Terra era un sasso che galleggia nello spazio; sotto la Terra non c'era altra terra, né tartarughe, né le gigantesche colonne di cui parla la Bibbia. Come hanno fatto i Greci a comprendere che la Terra è sospesa nel nulla? Chi lo ha capito e come? È di questa straordinaria «rivoluzione scientifica» di Anassimandro che l'autore ci parla, e che Karl Popper ha definito «una delle idee più audaci, rivoluzionarie e portentose dell'intera storia del pensiero umano". E del conflitto che ha aperto, che ancora brucia. E della natura del pensiero scientifico, della sua capacità critica e ribelle, della forza con cui sovverte l'ordine delle cose e la nostra immagine del mondo; di un sapere scientifico estremamente efficace e «sbagliato» al tempo stesso, come ci insegna la fisica del xx secolo. Parlare di Anassimandro è riflettere su cosa significhi la rivoluzione scientifica aperta da Einstein.

I found some more detail here, a kind of newsletter on the media dated end July:
http://www.italiannetwork.it/news.aspx?id=29101

I was puzzled by not being able to find a picture of the COVER of the Italian edition
=========================

If anyone is new to the discussion, the English version of the book is here:
https://www.amazon.com/dp/1594161313/?tag=pfamazon01-20
 
Last edited by a moderator:
  • #51
I put the Table of Contents in a compact form so it gives a kind of outline of the book in a glance. You can see how the book is divided about evenly between a revealing spotlight on the past and reflections on its significance for the present.
https://www.amazon.com/dp/1594161313/?tag=pfamazon01-20
==The First Scientist TOC==

Introduction xi

1.The Sixth Century 1
Knowledge and Astronomy 4/ The Gods 15/ Miletus 18

2.Anaximander’s Contributions 29

3.Atmospheric Phenomena 37
Cosmological and Biological Naturalism 42

4.Earth Floats in SpaceSuspended in the Void 45

5.Invisible Entities and Natural Laws 61
Thales: Water 62/ Anaximenes: Compressing and Rarefying 64/ Anaximander: Apeiron 65/ The Idea of Natural Law: Anaximander, Pythagoras, and Plato 70

6.Rebellion Becomes Virtue 75

7.Writing, Democracy, and Cultural Crossbreeding 83
The Greek Alphabet 87 Science and Democracy 93 Cultural Crossbreeding 97

8.What Is Science? 103
The Crumbling of Nineteenth-Century Illusions 104/ Science Cannot be Reduced to Verifiable Predictions 107/ Exploring Forms of Thought About the World 111/ The Evolving Worldview 114/ The Rules of the Game and Commensurability 120/ Why is Science Reliable? 123/ In Praise of Uncertainty 125

9.Between Cultural Relativism and Absolute Thought 131

10.Can We Understand the World Without Gods? 143
The Conflict 147

11.Prescientific Thought 157
The Nature of Mythical-Religious Thought 159 The Different Functions of the Divine 170

Conclusion 179

Notes 183/Bibliography 191/Index 199/Illustration Credit 210/Acknowledgments 211
 
Last edited by a moderator:
  • #52
A couple of posts ago I was curious about the Italian edition and found out some things by going to the publisher's (Mondadori) page.
http://www.libreriauniversitaria.it/cos-scienza-rivoluzione-anassimandro-rovelli/libro/9788861840751
http://www.amazon.it/dp/8861840752/
But couldn't find anything about the front cover. Now I see the front of the Italian edition is a long-exposure picture of the Northern sky, showing how the stars move in concentric circles around the pole-star. From which (though without benefit of photography :smile:) Anaximander was able to deduce there was nothing under the Earth to support it. This picture, which is emblematic or iconic of one of his greatest insights, happens to be featured on the back cover of the English edition. Since I have the English edition, I can show you the jacket and you can see the sky picture I mean.
 

Attachments

Last edited:
  • #53
Part of the interest in The First Scientist is the urge to understand the consequences of the scientific revolution that started in Ionia around 600. It's effects permeate our life---they are everywhere.
One can also say that about the invention of agriculture or the first stone tools, but among the human initiatives we can date and assign to definite persons the SciTech tradition is possibly the one with most pervasive influence on life today.

So I keep coming back to the SciTech timeline---the sequence of thoughts and events that started around 600 BC which we take as our SciTech "Year One" = 1 ST. If you prefer, think of "ST" as standing for "since Thales".
To illustrate the year numbering convention used here: Columbus sailed the ocean blue in twentyhundred-ninetytwo (2092 ST) and the first demonstration of an electromagnet motor was in 2421 ST by Faraday.
Approximate lifespans will be shown here by midpoint (± halflife)
For instance, Faraday lived 2429±38, fewer digits to remember than with the alternative style b. 2391 and d. 2467.
Here't the latest version of the timeline:

3 ST Solon lived 3±40.
16 ST Thales of Miletus lived 16±39; systematic natural explanations; calculated height of pyramids and distance of ships from the shore; predicted eclipse that occurred in 16 ST.
22 ST Anaximander of Miletus 22±32; Earth unsupported in space, “first geometrical model of the world...”; improved on Thales natural explanations. Nature governed by natural laws analogous to laws of a city?
70 ST Pythagoras of Samos (±40); mathematical formulation of natural laws.
137 ST Anaxagoras (±37); moon shines with the light of the sun, explaining phases and eclipses.
167 ST Socrates of Athens (±35)
218 ST Eudoxus of Cnidus (±28) detailed cosmic model with concentric spheres reproducing observed (e.g. retrograde) motions.
248 ST Aristotle (±31)
270 ST founding of the port city of Alexandria which became a hub of learning and scientific activity; among Mediterranean cities, second only to Rome in size and wealth.
300 ST publication (in Alexandria) of Euclid's Elements

302 ST Strato of Lampsacus (±32); performed physics experiments, noted the acceleration of falling bodies. http://en.wikipedia.org/wiki/Strato_of_Lampsacus
330 ST Aristarchus of Samos (±40); Inferred from observation that the Sun was much farther away than the Moon, and therefore much larger in actual size. Conceived the heliocentric model. According to Archimedes and others, he held that the Moon revolved around the Earth and the Earth around the Sun, which remained stationary like the stars.
351 ST Archimedes of Syracuse (±38) contributed numerous advances to science including the principle that a body immersed in fluid is buoyed up by a force equal to the weight of the displaced fluid. "His method was to select definite and limited problems. He then formulated hypotheses which he either regarded, in the Euclidean manner, as self-evident axioms or could verify by simple experiments. The consequences of these he then deduced and experimentally verified" [Crombie 1952, page 278]. Constructed cosmic models using gearwheels. For a later example which has survived, see:


Additional information in this as well:
http://www.youtube.com/watch?v=ZrfMFhrgOFc&feature=fvst
He also got some nice math results, for instance in solid geometry, and calculated the value of pi.
365 ST Eratosthenes of Cyrene (±40); calculated the circumference of the Earth and basically got it right (accurate to within a couple of percent).
445 ST Hipparchus of Rhodes (±35) Besides much else, he determined that the distance to the moon was about 60 times the radius of the Earth.

Starting around 500 ST Roman expansion (the Macedonian Wars) disrupted the Hellenistic east Mediterranean. Learning survived in dumbed-down version from which, however, it was eventually able to be revived.
1415 ST Muhummad al-Khwarizmi (±35); Persian mathematician and astronomer, wrote a standard algebra text On Calculation by Completion and Balancing (al-Jabr wa'l Muqubalah = completion and balancing) and a book on "Indian" positional notation that introduced decimal numbers to Europe.
1690 ST Omar Khayyam (±42); Persian poet, mathematician, astronomer.
2092 ST Columbus' voyage
2200 ST Kepler (±30) Stated his first two laws in 2205: (i) Orbits are elliptical with sun at one focus (ii) Planet sweeps out area in its ellipse at a steady rate. Third (square-cube) law in 2218: If you square the number of years that a planet takes to orbit what you get is the cube of its average distance from the sun compared with that of the earth. If a planet takes 8 years to orbit then it must be 4 times farther than we are from the sun because 82=43.
2203 ST Galileo (±39); in 2210 observed Jovian moons with telescope, in 2232 published "Dialogue Concerning the Two Chief World Systems."
2275 ST roughly accurate measurement of the speed of light by Olaus Roemer at the Paris Observatory.
2388 ST Pierre-Simon Laplace (±39) "Celestial Mechanics" published in several volumes right around 2400. http://en.wikipedia.org/wiki/Pierre-Simon_Laplace
2429 ST Michael Faraday (±38); first demonstrated an electromagnet motor in 2421. Much more. The idea of a field. Intuiting molecular structure. One of three people whose pictures Albert Einstein had on the wall of his office at the IAS. http://en.wikipedia.org/wiki/Michael_Faraday
2455 ST James Clerk Maxwell (±24) published "A dynamical theory of the electromagnetic field." in 2464. Another of Einstein's three portraits.
2505 ST Einstein's Wunderjahr.
2515 ST publication of the geometric theory of gravity.
2546 ST semiconductor solar cell patented by Russell Ohl (developed for practical application 2554 at Bell Labs) http://en.wikipedia.org/wiki/Photovoltaic_cell
2611 ST present :)

Feel welcome to suggest additions!
 
Last edited by a moderator:
  • #54
Very nice! The third on Einstein's wall was Newton?
(My ordered copy is still some weeks away.)
 
  • #55
fuzzyfelt said:
The third on Einstein's wall was Newton?

:wink:yes

Actually the source I gave for that was this Wkpd article
http://en.wikipedia.org/wiki/Michael_Faraday
and Wikipedia is not 100% reliable. I looked up the source THEY cite, and again it was not entirely...well. So I can't swear to it. (And it said "study" wall--I should not have assumed it was at IAS!)

==quote Wkpd==
Albert Einstein kept a photograph of Faraday on his study wall alongside pictures of Isaac Newton and James Clerk Maxwell.[6]

[6] ^ "Einstein's Heroes: Imagining the World through the Langauge of Mathematics", by Robyn Arianrhod UQP, reviewed by Jane Gleeson-White, 10 November 2003, The Sydney Morning Herald.
==endquote==

Maybe it's OK. Here is the Gleeson-White review of the book "Einstein's Heroes"
http://www.austms.org.au/Jobs/Library26.html
==quote==
But a young scientist born the year of Maxwell's death, Einstein, was so inspired by Maxwell's mathematics - which he'd had to teach himself because his teachers didn't include it in their curriculums - that he put a photograph of Maxwell on his study wall, alongside pictures of Michael Faraday and Isaac Newton. These three men are Einstein's Heroes.
==endquote==
But I still wonder. I would like to see a firsthand source.
 
Last edited:
  • #56
No thermo? I'm sure Einstein secretly wished to be a thermodynamicist (didn't he make that remark about if your theory contradicts the second law of thermodynamics?), rather than a plain dynamicist like Newton or Maxwell (well, Maxwell did have Maxwell-Boltzmann). Of course, Jacobson showed he intuited correctly after all. Quite amazing, the Wunderjahr things were Brownian motion, photoelectric and special relativity. If we count the photon as being inspired by blackbody radiation, and special relativity as the precursor to general relativity, then all the Wunderjahr things are thermo related. The other amazing prediction - some say Einstein "invented" the laser - is his prediction of stimulated emission - again thermo related. Now shouldn't that mean the "invention" of fire is start of the scientific age, not Thales?
 
  • #57
Actually I was thinking of adding Ludwig Boltzmann. I'm a fan of his. But would you like to propose an entry? Gibbs? Carnot? Clausius? Boltzmann? Try to think of a very brief (sentence or two) indication of something the person did or idea they got...

Here's a source on Josiah Willard Gibbs, if you decide to contribute a timeline entry about him:
http://en.wikipedia.org/wiki/Josiah_Willard_Gibbs
(2439 + 2503)/2 = 4942/2 = 2471±32
Boltzmann's mid±half = (2444 +2506)/2 = 4950/2 = 2475±31

A very beautiful title: published in 2424 ST Reflections on the Motive Power of Fire
by Sadi Carnot. It is so beautiful I cannot wait for you to propose this entry! It is in!

http://fr.wikipedia.org/wiki/Sadi_Carnot_(physicien ) published just one book in his short life:
Réflexions sur la puissance motrice du feu et sur les machines propres à développer cette puissance

Rudolf Clausius http://en.wikipedia.org/wiki/Rudolf_Clausius (2422 - 2488 --> 2455±33)
==quote==
... was a German physicist and mathematician and is considered one of the central founders of the science of thermodynamics.[2] By his restatement of Sadi Carnot's principle known as the Carnot cycle, he put the theory of heat on a truer and sounder basis. His most important paper, On the mechanical theory of heat, published in [2450], first stated the basic ideas of the second law of thermodynamics. In [2465] he introduced the concept of entropy...
==endquote==
 
Last edited by a moderator:
  • #58
marcus said:
A very beautiful title: published in 2424 ST Reflections on the Motive Power of Fire
by Sadi Carnot. It is so beautiful I cannot wait for you to propose this entry! It is in!

http://fr.wikipedia.org/wiki/Sadi_Carnot_(physicien ) published just one book in his short life:
Réflexions sur la puissance motrice du feu et sur les machines propres à développer cette puissance

Rudolf Clausius http://en.wikipedia.org/wiki/Rudolf_Clausius (2422 - 2488 --> 2455±33)
==quote==
... was a German physicist and mathematician and is considered one of the central founders of the science of thermodynamics.[2] By his restatement of Sadi Carnot's principle known as the Carnot cycle, he put the theory of heat on a truer and sounder basis. His most important paper, On the mechanical theory of heat, published in [2450], first stated the basic ideas of the second law of thermodynamics. In [2465] he introduced the concept of entropy...
==endquote==

Clausius's deduction is one of the most amazing to me, especially because it follows from the "everyday language" of the Klevin and Clausius statements.

I had never known the fascinating history of Carnot's contribution. It is a very beautiful title indeed!
 
Last edited by a moderator:
  • #59
marcus said:
:wink:yes

Actually the source I gave for that was this Wkpd article
http://en.wikipedia.org/wiki/Michael_Faraday
and Wikipedia is not 100% reliable. I looked up the source THEY cite, and again it was not entirely...well. So I can't swear to it. (And it said "study" wall--I should not have assumed it was at IAS!)

==quote Wkpd==
Albert Einstein kept a photograph of Faraday on his study wall alongside pictures of Isaac Newton and James Clerk Maxwell.[6]

[6] ^ "Einstein's Heroes: Imagining the World through the Langauge of Mathematics", by Robyn Arianrhod UQP, reviewed by Jane Gleeson-White, 10 November 2003, The Sydney Morning Herald.
==endquote==

Maybe it's OK. Here is the Gleeson-White review of the book "Einstein's Heroes"
http://www.austms.org.au/Jobs/Library26.html
==quote==
But a young scientist born the year of Maxwell's death, Einstein, was so inspired by Maxwell's mathematics - which he'd had to teach himself because his teachers didn't include it in their curriculums - that he put a photograph of Maxwell on his study wall, alongside pictures of Michael Faraday and Isaac Newton. These three men are Einstein's Heroes.
==endquote==
But I still wonder. I would like to see a firsthand source.


Heh!:) Also, I didn't mean to question the source, sorry.
 
  • #60
fuzzyfelt said:
Heh!:) Also, I didn't mean to question the source, sorry.

I knew you hadn't asked about the source, but would not have minded if you had, Fuzzyfelt!
Your question made me wonder about it, though, and I was glad to be reminded. :)
 
Last edited:

Similar threads

  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
35
Views
20K
  • · Replies 53 ·
2
Replies
53
Views
15K