What is Nature: Definition and 728 Discussions

Nature, in the broadest sense, is the natural, physical, material world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena.The word nature is borrowed from the Old French nature and is derived from the Latin word natura, or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, natura is mostly used as the Latin translation of the Greek word physis (φύσις), which originally related to the intrinsic characteristics that plants, animals, and other features of the world develop of their own accord.
The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-Socratic philosophers (though this word had a dynamic dimension then, especially for Heraclitus), and has steadily gained currency ever since. During the advent of modern scientific method in the last several centuries, nature became the passive reality, organized and moved by divine laws. With the Industrial revolution, nature increasingly became seen as the part of reality deprived from intentional intervention: it was hence considered as sacred by some traditions (Rousseau, American transcendentalism) or a mere decorum for divine providence or human history (Hegel, Marx). However, a vitalist vision of nature, closer to the presocratic one, got reborn at the same time, especially after Charles Darwin.Within the various uses of the word today, "nature" often refers to geology and wildlife. Nature can refer to the general realm of living plants and animals, and in some cases to the processes associated with inanimate objects—the way that particular types of things exist and change of their own accord, such as the weather and geology of the Earth. It is often taken to mean the "natural environment" or wilderness—wild animals, rocks, forest, and in general those things that have not been substantially altered by human intervention, or which persist despite human intervention. For example, manufactured objects and human interaction generally are not considered part of nature, unless qualified as, for example, "human nature" or "the whole of nature". This more traditional concept of natural things that can still be found today implies a distinction between the natural and the artificial, with the artificial being understood as that which has been brought into being by a human consciousness or a human mind. Depending on the particular context, the term "natural" might also be distinguished from the unnatural or the supernatural.

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  1. K

    Thinking about one directional nature of time

    Hi all, I am from electronics background, yet I have studied quantum mechanics. Lately I have been reading Prigogine I., "From being to becoming". (If I am correct) the book deals with the one directional nature of time as it flows from past to present and onwards to future. But I did not get...
  2. P

    Why the fundamental laws of nature is the way it is?

    The world seems to me to be rather arbitrary. I don 't know if people feel the way I do. Scientists apply for government grants to gather data, and conduct experiments. Some scientists look at the data, and write down equations. If those equations are sufficiently fundamental, then some...
  3. D

    About wavefunctions, their complex nature and their approximations?

    Hello forum, I'm new here. Please bear in mind I'm not a physicist, I'm sure you hear this a lot but anyway. I've recently taken an interest into quantum chemistry. So my question is the following: I understand electronic and nucleic wave functions are complex. When they are multiplied by...
  4. I

    Understanding Stationary Points: Saddle, Max, or Min?

    Homework Statement Hi, I have been given a set of functions for which I need to find the stationary points , and determine whether the points are saddle, or max/min. I think I may have solved it correctly but I end up with all the points being saddle, surely this can't be right.. I may...
  5. maverick_starstrider

    The point of science and nature magazines

    I've really never understood it. What's the logic behind having a journal/magazine having expert articles across all fields of science? Any person from a given field is only going to benefit from like 1 maybe 2 articles an issue and be completely clueless for all the other articles. How did...
  6. S

    A thought experiment regarding the nature of space expansion

    I devised this using a setup that I found easiest to imagine, while trying to be clear on how modern physics considers space to expand. We have a nifty device that can cause spatial distortion (no, you cannot has one!). Before we use it, we lay down two meter rulers, end to end. They both...
  7. B

    Is the Dual Nature of Light Really That Confusing?

    In the documentary the Fabric of the Cosmos Leonard Susskind remarks how confused he is that a photon could be both a wave and a particle, he says a rock is a rock, and a wave is a wave (a picture of an ocean wave crashing). How could a rock be a wave? To me the answer is obvious, a wave is...
  8. A

    Crystalline Nature: NACl & NA2CO3.10H2O Explained

    is it necessary that all crystalline solids are hydrated or hygroscopic. could anyone explain me the case of NACl and NA2CO3.10H2O?
  9. M

    Why is Light Considered an Electromagnetic Wave?

    why is light called an electromagnetic wave??what does it have to do with electricity and magnetism?
  10. U

    The Nature of Infinity in Mathematics and Reality

    Hello all! In the past few months I've stumbled upon an issue that has played games with my mind. I feel I need some help to solve this, as I've tried various other sources and remain without answers. Firstly, I was confronted with a mathematical proof which states that 0.9~ (to infinity)...
  11. S

    Can physics shed light on the nature of human consciousness ?

    Hi, fellow curious minds, I believe that human neuro structures are microscopic and thus within the realm of QM.From my basic physics knowledge, it seems to me that QM's probability interpretation of micro-phenomena is related to human volition. Every moment our consciousness are choosing...
  12. B

    Sinc Function in Natural Phenomena

    Its my favourite function. \Large{\frac{sin(x)}{x}} I first saw it 1 year ago, when we studied limits. I don't know why, but I really like this function. Can anybody tell me an example, in nature where we have behaviour that has sinc function characteristics. Why am I asking this? Fourier...
  13. G

    Is the Big Bang the Only Explanation for the Universe's Nature?

    Everyone seems preoccupied with the Big Bang and there are believers and non believers. I choose to look outside the box and understand The Nature Of The Universe... Are there any articles available on this subject?
  14. B

    What is the primary evidence that the Earth's outer cores is fluuid in nature?

    Homework Statement What is the primary evidence that the Earth's outer core is fluid in nature? (2 marks) The Attempt at a Solution The Earth has a magnetic field which is created by molten iron that is moving. If there were a solid outer core, there would be no moving iron and no...
  15. T

    Why are there no well-defined energy states in nature?

    Hi all, My Physics tutor's reasoning for no well-defined energies existing in nature for a system in time was that if a system had a well defined energy in time, such that |psi> = |E0> then, evidently, the energy cannot vary. And, his logic goes on to say that if an energy cannot vary, you...
  16. M

    Nature of Real Applications Quantum Mechanics

    Nature of "Real" Applications Quantum Mechanics I've heard of several applications of quantum mechanics such as atomic clocks, transistors, lasers, etc. I understand how we need quantum mechanics to understand what's going on, but how exactly is quantum mechanics used in any sort of "real...
  17. T

    Nature of roots of quadratic equations

    Homework Statement The equation kx2 - 3x + (k+2) = 0 has two distinct real roots. Find the set of possible values of k. Homework Equations Since the equation has two distinct real roots, b2 - 4ac > 0 The Attempt at a Solution b2-4ac>0 9-4(k+2)(k)>0 9-4(k2+2k) >0 9-4k2-8k>0 =...
  18. F

    The nature of causality in special relativity (not faster than light travel)

    I am having trouble understanding how special relativity reconciles the concept of causality. In one frame of reference event A may be followed by event B, but in another frame of reference event B may occur before event A. In the first frame of reference an observer may claim that event A...
  19. H

    The double slit and wave particle nature.

    I have recently learned about the double slit experiments using electrons and photons. This has completely blown my mind and I want to learn more. With this aim I have a question that I hope somebody on here can answer. For this question I want to consider the use of electrons in the double...
  20. J

    Exploring the Nature of Dark Matter and Its Effects on Galaxies

    if there is dark matter every where, why it is noticed near galaxies? why can't we do some very sensitive lab experiments of gravity to find the effect of dark matter?
  21. T

    Finding the critical point and its nature. With solid attempt

    Finding the critical point and its nature. With solid attempt! Homework Statement Find all critical points of the function f(x, y) = xy2 - 2xy - 2x2 - 3x +7 and determine their nature. Homework Equations none The Attempt at a Solution I know that to find the critical points you must...
  22. A

    Radiation from charge ; nature of laws

    1.) does a stationary charge in a gravitational field radiate (as per the principle of equivalence)? 2.) why have we been advancing from seemingly less intelligent species to a more intelligent one? what is its physical significance (besides intelligence corresponding to complexity) ? why do...
  23. G

    Hooke's Law & Springs: Nature or Manufacture?

    Are springs manufactured to obey Hooke's law, or do all springs just naturally obey this property?
  24. andrewkirk

    How many laws explain everything we know about nature, and what are they?

    The other day, as I was struggling through my quantum mechanics text, I realized that the only physical laws presented in the text were the four postulates of QM, the last of which is Schrodinger's equation. These are presented around page 150. The first 150 pages establish the background needed...
  25. S

    Why do the forces of nature act on each other?

    why do fundamental forces of nature exist? Is it to attain a state of equilibrium? For e.g. is a positive charge is attracted to a negative charge to attain a state of equilibrium? Then why do forces like gravity, strong force, weak force exist?
  26. H

    Nature of Dark Energy and a cracker in the sand

    I have a question of sorts. I was taught that the universe formed from the Big Bang, which was a unique event. Much later I learned about the hypothesis of a multiverse, and the prospect that the Big Bang and our universe might not be as unique. This has off course has yet to be proven. Later...
  27. R

    Is Simple Nature by Benjamin Crowell sufficient for self-study?

    Physicist Benjamin Crowell has released several open-source textbooks on physics and mathematics; one of them being http://lightandmatter.com/area1sn.html" . I have decided to study physics on my own in my spare time and Simple Nature seems to be quite sufficient; at least as an introductory...
  28. N

    Are there different types of zero in mathematics?

    With the last year or so I came across a great discussion in these forums about the different types of infinity. It had never occurred to me there would necessarily be different types with different "values". How about zero? Are there different mathematical concepts regarding it or are all...
  29. M

    Understanding nature of current in LC circuit

    Alright, I have an LC circuit. Using conservation of energy, I get \frac{dI}{dt}= \frac{-q}{CL} which gives \frac{d^2q}{dt^2}= \frac{-q}{CL}, therefore, q=q_o sin(\omega t +\phi), where \omega= \frac{1}{\sqrt {LC}}, giving q=q_o cos(\omega t) which implies I= -q_o \omega sin(\omega t). Now...
  30. B

    Are laws of nature really the same in all reference frames?

    Let’ say; “A” can see and measure a stone falls to the Earth let’s say 10 meter per 1 Earth-second. “B” lives at Mercury and can see the same thing. But “B” would do not see the exactly the same, because seen from “B’s” viewpoint time / distance is not the same as for “A”. Let us say...
  31. M

    Whether to sell my Science and Nature journal hardcopies

    Hi all - I have a few questions. Well, one, actually. So I have about 10 years (2000-2010) worth of hardcopy Science, Nature, and Nature Medicine journals, each. I was thinking of selling these, but I'm not sure if there is a market for them. I have been checking ebay for a while and I don't...
  32. C

    Nature publishes ridiculous editorial on researcher working hours

    Has anybody seen http://www.nature.com/nature/journal/v477/n7362/full/477005b.html"? I can't believe that a journal like nature is condoning the idea that unreasonable working hours for researchers are ok because that's just how things are going. What are some others' opinions on this article?
  33. M

    Exploring the Physical Interpretation of Matter Waves in Quantum Theory

    Hi, I am trying to understand whether quantum theory provides any sort of physical interpretation of matter waves. So far, I have been attempting to work my through some of the developments, but possibly failing to grasp what appear to be some fairly fundamental issues. Therefore, I was hoping...
  34. F

    Wave nature of electron, interference and standing waves

    Hello, was wondering a couple of details on the wave nature of electrons and the state of the art in this field. In particular: Is it practical and possible (easily) to create a cm sized electron interference pattern (fringes are in the cm size magnitude). I have so far seen Low Energy...
  35. L

    Dual Nature of Light: Waves and Particles

    Homework Statement Light propagates as waves, but exchanges energy as particles Homework Equations I don't understand the second part, i.e., light exchanges energy as particle. I need the help of members in this regard The Attempt at a Solution
  36. M

    Does nature actually abhor anything?

    There's a saying that nature abhors a straight line. It's not totally true because crystals have straight lines. One thing I don't recall seeing in nature is a knot. Is there an example of a knot in nature? Does nature abhor a knot?
  37. PainterGuy

    Do square, sawtooth, and triangular waves exist in nature?

    Hi, Wate ripples closely resemble sinusoidal waves which means sine waves exist in nature. Do square, sawtooth and triangular waves exist in nature, or, have they been invented for their special characteristics? Help me, please. Thanks Cheers,
  38. R

    Find the critical points of (x^2+y^2-4)(x+y) and their nature

    Hi, I am studying for my Analysis final and came across this problem I just can't get my head around: Homework Statement Find the critical points of f(x,y) = (x^2+y^2-4)(x+y) and their nature. Homework Equations \vec{\nabla} f(x,y) = \vec{0} The Attempt at a Solution \frac{\partial...
  39. Q

    Understanding the Invariance and Limitations of Conservation Laws

    It seems to me that there is a difference between, say, the law of conservation of linear momentum or energy and the law of conservation of angular momentum. The first two are valid in any frame of reference and their invariance is a direct consequence of the relativity principle, whereas...
  40. O

    Chemistry - Why does Bromine-80 not occur in nature?

    Homework Statement I had the following question in my chemistry book... A mass spectrum of Br2 has three peaks, with the mass numbers 158, 160, and 162. Use this information to determine which isotopes of Bromine occur in nature. Homework Equations The Attempt at a Solution...
  41. I

    LaTeX Where Can I Find a Latex Template for Nature Physics?

    Hi, Does anybody know where I could download a latex template for the magazine Nature Physics? or Nature ? Thank you all.
  42. S

    What is the nature of photon spin and how does a polarizer affect it?

    by undefined do we mean 1 or 2 below? 1. we don't know the polarization (but it must be having some value of the spin) or 2. the photon does not have a definite spin yet mixed polarization means: a mixture of defined spins? (up or down, right or left etc) once a polarizer has defined a spin...
  43. R

    Thought experiment on the nature of light

    There have been a number of very interesting posts lately around the nature of light. So I devised a simple thought experiment to try and understand it a bit more. Say John and I are next to each other in rocket ships, at rest wrt to Jane, who is 1 light minute away in her rocket ship. All...
  44. S

    Non-symmetric nature of the Doppler Effect with sound

    While studying the Doppler effect at school, it struck me as strange that the following two problems have different solutions: a) you are moving at 40 m/s toward a source that is making a sound with a frequency of 1000 Hz. What frequency do you hear? (speed of sound= 340 m/s) b) The...
  45. G

    Is Gravity a Result of Mass Attracting Quanta of Mass?

    I was thinking a bit about gravity. As is known, Physicists have yet been unable to unify the Theory of Relativity (describing gravity) and Quantum Theory (decribing the other three fundamental forces). As mass is a measure of a system's energy, the force of gravity (presumably carried by...
  46. Islam Hassan

    What are the different forces that can contribute to particle decay processes?

    What drives particle decay? Is it an elementary, irreducible observation or can we model it based on a set of observable variables? Do all particle decay modes involve the weak force? Does one even need the intervention of a given force to have particle decay? Does string theory explain...
  47. K

    Fluid Dynamics: The nature of vortex's

    I've recently read a paper which suggested some properties of vortex's, which I could not confirm in my elementary physics textbooks or during a quick google search. I hope to find some evidence that: All vortex phenomena are actually composed of two vortex's: 1 - An outer vortex which...
  48. C

    Medical How to think about minds in nature? What do they do?

    I've recently been researching Argentinian Electroneurobiology. It seems to be an old tradition, based on clinical research. Now I posted specific questions related to the physics used to underpin this view in the quantum subforum, but regrettably the thread was locked (probably because this is...
  49. S

    Fermionic nature of quantum gravity

    In this new paper today http://arxiv.org/abs/1105.4184, is it considered whether quantum gravity actually has fermionic fields rather than just bosonic fields: Abstract It is generally assumed that the gravitational field is bosonic. Here we show that a simple propagating torsional theory...
  50. Z

    Nature of roots of an equation

    Homework Statement The equation A2/(x-a) + B2/(x-b) + C2/(x-c) + ... + H2/(x-h) = k has 1) No real root 2) At most one real root 3) No complex root 4) At most two complex roots The Attempt at a Solution We can see that the function f(x) = L.H.S. - R.H.S. is a strictly decreasing...
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