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Questions tagged [einstein]

Albert Einstein (1879–1955) was one of the most important physicists of all time. His work touched many major areas of physics, although he is mostly known as the creator of the theory of relativity and the photoelectric effect. Use this tag for questions about Einstein's scientific life.

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What was the relationship between Einstein and Minkowski?

I read many Einstein's Biographies, but Minkowski was never mentioned, though his discovery of the union of space and time created the basis for GR. Minkowski was Einstein's teacher of mathematics ...
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Where did Einstein propose interpreting the square of amplitude as probability density (Born's rule)?

In Max Born's Nobel lecture, he alludes to Einstein's proposed interpretation of EM wave amplitude (squared) as being the probability density of detecting a photon: Again an idea of Einstein’s gave ...
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Source for this story about EInstein learning algebra from his uncle

I have occasionally run into the following story (or a variation of it) about Albert Einstein: Young Albert did not like algebra, and his uncle is supposed to have aroused his curiosity by ...
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Is it true Einstein doubted relativity near the end of his life?

Heard he wrote a bunch of rambling thoughts near the end of his life and doubted his own theory of relativity...it was in Einstein: His Life and Universe by Walter Isaacson
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How did Einstein know the Avogadro Number?

Wikipedia says the Avogadro number was determined by Perrin in 1908. But Einstein used the value $$N=6\times 10^{23}$$ as early as 1905 in order to estimate the size of the fluctuations of an ...
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Duality while studying properties of an ensemble

Was Einstein the first to propose that observing an ensemble of N particles for time interval of dt is same as observing a single particle of ensemble for time interval of Ndt?
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How did Maxwell fall short of Einstein?

This source (I believe it's in Ukrainian) claims that Maxwell came very close to creating the relativity theory, however, it was the fact that he was adhering to the traditional scientific frame of ...
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Did Einstein want to reduce general relativity to elementary mathematics?

In this recent article, the authors write Consequently, it is a desideratum to teach general relativity in a way that is based on elementary mathematics only. This objective, already stated by ...
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What did Albert Einstein mean by “psychical entities”?

I first saw this quote on p. 26: Philip Johnson-Laird BA PhD Psychology (UCL), Stuart Professor of Psychology Emeritus at Princeton. (Author isn't a logician.) How We Reason (1st edn 2008). ...
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Einstein really didn't “accept” quantum mechanics? [duplicate]

It is sometimes said that Einstein didn't accept quantum mechanics. Some stronger claims are that he viewed it as wrong altogether, considering it not a viable description of nature. Well, I want to ...
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Did Einstein get inspired by projective geometry?

I read somewhere that projective geometry was an inspiration to Einstein to build the theory of relativity. However, the keyword "projective geometry" isn't mentioned in history of general relativity ...
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What has Einstein actually written about the chronology of his discoveries?

I have heard some stuff about how Einstein got is ideas from third parties. I've read a biography about him by Walter Isaacson, and a lot of possibly wrong one-liners on the internet. But I'm ...
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So how much did Mileva Maric contribute to Einstein's work?

I don't believe in the ridiculous conspiracy theories that she was the true founder of relativity and Einstein stole credit from her or any of that but did she play a role in anyway helping him? ...
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Why did Einstein turn his back on a probabilistic universe?

One of Einstein's famous quotes is "God does not play dice", referring to his dislike of the probabilistic model of the universe, as found by quantum theory. However, in the book "Quantum Mechanics: ...
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Why didn't Einstein try to include the strong and weak forces in his attempts at a unified theory?

Einstein began working on unified field theory at a time when the weak and strong force were perhaps not known I believe...but as the years proceeded and the weak and strong force were being outlined ...
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Einstein and the concept of decoherence

WARNIG: Contrafactual question It is commonly known that Einstein was not fond of quantum mechanics -- formulated in the famous quote "God does not play dice with the universe". This quote comes ...
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Why didn't Einstein win a second Nobel Prize, for relativity?

Einstein's failure to win a Nobel until 1921, and that prize's not being awarded for his work on relativity, is generally ascribed to these factors: Lack of sufficient experimental proof for the ...
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What was Einstein's contribution to the Einstein-Podolsky-Rosen (EPR) paper?

Do we have any insight or document into theoretical development of the EPR papers both in terms of math, ideas and anything related to actual physical problem. I know that Einstein didn't write the ...
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Was the pre-special relativity discussion a hot topic in the late nineteenth and early twentieth century?

We know that low-dimensional materials and topological materials are some of the current hot topics in Physics. Did this happen with the pre-special relativity discussions in the late nineteenth and ...
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Why did Einstein oppose quantum uncertainity?

Einstein always believed that everything is certain, and we can calculate everything. That's why he rejected quantum mechanics, due to its factor of uncertainty. But still quantum physics was right. ...
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How did the publication feat of Einstein's four 1905 Annus Mirabilis papers get through peer review?

Einstein's early career is well-known for the lack of success he had applying for assistant lecturer positions with universities; he could not get a position, and he ended up working in a Bern patent ...
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How Einstein got the first idea for special relativity?

I am reading Big Bang by Simon Singh. Here is the short story (as I understood it): Einstein gets a contradiction by assuming that 1- The speed of light $c$ is constant with respect the ether. 2- ...
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What was Einstein's reasoning to conclude particles follows geodesics through spacetime?

When formulating General Relatvity Einstein proposed that freely falling particles, that is those subject to no forces other than gravity, follows geodesics through spacetime. In other words, those ...
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Einstein already used the idea of time orientation when formulating General Relativity?

The theory of General Relativity as usually presented currently defines the relativistic spacetime as a tuple $(M,g,\nabla, T)$ where $(M,g)$ is a four dimensional smooth lorentzian manifold, $\nabla$ ...
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With what microscope and pollen was the Browinian motion discovered?

It is said that Robert Brown discovered the Brownian Motion by looking at pollen grains with a microscope in 1827. I wonder, did he look at pollen grains from a flower? And what kind of microscope ...
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Did Albert Einstein write a computer program?

I am curious whether or not Albert Einstein wrote a computer program. Did he write a computer program?
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How was Einstein led to make a contact with Differential Geometry for his theory of General Relativity?

General Relativity was developed with Differential Geometry as the tool. How was Einstein led to make a contact with Differential Geometry for his theory of General Relativity? Who suggested him to ...
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At what point did Einstein realise that gravity was curvature of spacetime?

Did he realise this as soon as he thought of light curving due to gravity or was this something that took him a while to realise?
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What did Einstein contribute to Special Relativity that hadn't already been done by Lorentz in 1904 and Poincaré in 1905?

What did Einstein contribute to what is now called Special Relativity theory that hadn't already been done by Lorentz in his 1904 "Electromagnetic Phenomena in a System Moving with any Velocity ...
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Why are Bose-Einstein Condensates (BECs) named after Bose and Einstein?

Why are Bose-Einstein Condensates (BECs) named after Bose and Einstein? What did Einstein contribute to BECs?
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Why Doesn't Einstein Get More Credit for Being the Father of Quantum Mechanics?

I'm not simply referring to the notion that Einstein treated the discrete emission and transference of energy (and matter) as "real" physical phenomena, but rather his major continuous role in the ...
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Max Planck's reaction to Einstein's 1905 STR Paper

It is quite well-known that Planck was one of the first people to realize the significance and importance of Einstein's theory of relativity. But I have heard a few times that when Einstein sent his ...
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What was different about Planck's quantization of light compared to Einstein's?

In describing black body radiation Planck assumed that the energy that can be absorbed or emitted by charges is quantized, i.e. they can only absorb or emit certain quantities of energy. But it was ...