Einstein Definition and 788 Threads

what were they all?

Paul Dirac said that Einstein didn't need new experimental data to produce a new theory.And he also said that infinities should not appear in a theory that is correct.What do people on theory development think about these remarks made by a man respected for the depth and clarity of his theories?

Almost a hundred years ago leading scientists were discussing the fact that if the most elemental constituents of mass all moved at the invariable speed of light, the phenomena of relativity would be a natural consequence. This, of course, required the classical space-time. Has anyone ever...

Origin and escalation of mass-energy equation E=mc^2 Ajay Sharma Community Science Centre. DOE. Post Box 107 Shimla 171001 HP INDIA Email physicsajay@lycos.co.uk , physicsajay@yahoo.com Einstein’s...

Hello friends, Einstein proved that if an object travels in a vacuum nearly at the speed of light, the result will be that the object will be transferred into future. One of my proffesors said that if a rocket travels round the Earth in space, with the speed of light for 1 year, then already a...

Most physics books says something like this on the photoelectric effect: "the photoelectric effect provided strong evidence of the particle nature of light - and it eventually led Einstein to propose that light consisted of discrete packets of energy (photons) in 1905." I have been told...

Like anyone other than Stephen Hawking... =-/

I hope this is being placed in the right forum. I am still getting acquainted with PF. The "no dice" post in quantum got me thinking...was Einstein schizoaffective ? I know very little about him other than his brain size was different...i think. Does anyone know how? When I...

Finally something interesting in the news. Check it out . http://www.cnn.com/2004/TECH/space/04/02/einstein.satellite.ap/index.html

How can I obtain a Kerr metric by using the Einstein equation?

Was Einstein really a genius or just someone clever with new ideas? SR is really a simple theory and uses many ideas from other scientists. Clearly he was creative, but was he a genius[?]

Hello there! I asked this question in a different forum, and was directed to ask this here: ---- My next question also involves Einstein. It's about gravity not really being a force or whatever. According to the program the Earth revolved about the sun because the sun warps the space time...

Heya guys I have a few general questions. The first one is about Stephen Hawking. How does he express his ideas these days? I saw a thing about him on TV today and it seemed as though he has extremely limited motor function in his hand, and he can't speak, except for the text-to-speach...

Please, take a look at the last paragraph of the http://www.aliasabur.com/nytimes.html then read the whole article and answer my question.

I was reading the other day about John Tyndall, who I believe was the first person to discover that because blue wavelengths are relatively short, they scatter and disperse more than red wavelengths. At this point I remembered that Einstein’s original theory of relativity had included a...

Ok. I have a question on SR/GR with regards to Einstein. How did he come up with this? That's what I don't understand about physics and physicists. How do they derive a formula that represents what they are trying to express? And especially with regards to Einstein. His relativity...

The difference between us and einstein is that he thinks every basic concept of the physics extremely logically. Logically means he goes back to the origin of the theory and starts connecting the basic concepts until he reaches the desired concept. Its like you go to root of the tree and start...

Section 11.6 of Ray D'Inverno's book Introducing Einstein's Relativity This section shows Palatini's approach in using an equivalent Lagrangian to obtain the vacuum field equations of GR and the connection. From equation 11.39, we already have...

I read somewhere that the roots of SR can be traced back to Einstein's childhood. I wish I could remember where I read it, but I can't. (for some reason I am leaning towards "The Universe in a Nutshell") It said that when he was a boy (11 years old, I believe) he went to the beach with his...

http://www.gsfc.nasa.gov/topstory/2003/1212einstein.html

if Einstein sits in front of you now, what would you like to ask him? for example: what do you think about experimental success of bose-einstein condensation. certainly he will not believe me.

A friend of mine asked me this question Does anyone know the answer? Thanks Pete

Hello everyone I am new to PF actually this is my first thread. I am looking for the equation to see how far and how, the radiation from the Nuclear Blast using E=mc^2. Can anybody help? Please[?] Nicole

An experiment by Italian scientists using data from NASA's Cassini spacecraft , currently en route to Saturn, confirms Einstein's theory of general relativity with a precision that is 50 times greater than previous measurements. Link.

John Baez just posted this announcement and tentative schedule for a conference this month at the Albert Einstein Institute (Max Planck Institute for Gravitation Physics) on the outskirts of Berlin. We have had several threads at PF studying work by AEI people---Hanno Sahlmann, Martin...

Does Bose Einsteine Condesate violate the Pauli Exclusion Principle?

I was just doing some thinking, but some of the things Einstein has said over the years is just downright unacceptable. For instance, when he said his famous saying pertaining to Heisenburg's uncertainty principle and how it explains quantum mechanics,"God does not play dice." Now, I know...

Something Einstein wrote in 1952 contains this quote "Space-time does not claim existence on its own, but only as a structural quality of the field." It is not especially easy to grasp the meaning, I suspect, but it might be worth thinking about. Eh quoted this in another PF thread and I...

Lets brainstorm what kind of impact he might have had if he were still alive. Also do you think he'd be as popular? People seem to be more famous after their death.

Mr. Robin Parsons and I were discussing this issue on another thread. He claims sources show that Einstein confessed his belief in the "aether" after 1919 and thereafter held to that view. I showed him an Einstein quote from 1920 in which E. said "The aether of the general theory of relativity...

I challenge you to name at least one area of physics that the work of Einstein did not somehow affect. If you take this challenge, you, like your pathetic parents, are destined for failure. eNtRopY

this subject,amoung others facinate me, does anyone have an insight as to what is happening here?

I've been reading the book Relativity by Einstein, but need some things cleared up. I have only studied physics in college (took both mechanics and topics pertaining to more smaller scale phenomenas) and have a vague familiarity with concepts of physics but would like to expand on this a bit...

Einstein proved wrong about blue sky! In 1911 Einstein published an explanation of why the sky is blue based on analysis of Rayleigh scattering by nitrogen and oxygen molecules. His analysis was sufficiently detailed and accurate that it was used to provide an independent measurement of the...

Looking for Einstein Field Equations, in certain places put that they are 10 and in other places put that they are 16. Which is the correct number?

Simon Baron-Cohen of Cambridge University and Ioan James of Oxford University have concluded that Albert Einstein and Sir Isaac Newton exhibited symptons of Asperger Syndrome, a form of autism. http://story.news.yahoo.com/news?tmpl=story&u=/nm/20030501/od_nm/science_autism_dc_5

[SOLVED] Einstein was right about the speed of gravity Here's the link. http://www.msnbc.com/news/856046.asp#BODY I just read an article on MSNBC. I always thought gravity traveled at the speed of light anyways. Makes sense in soooo many different respects. Anyway, thought I'd post that bit...

In this topic (If I am allowed), I shall be concerned with applying reasoned-thought to specific issues concerned with Einstein's theory of Relativity. This first post is to the mentors and to the people who complain to Greg. I want to know if I am going to be allowed to proceed, before I do...