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Q&A

Posts tagged special-relativity

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Q&A Is $E=mc^2$ true for all frame of references?

Which one is correct? $$E=mc^2$$ or $$E^2=(mc^2)^2+(pc)^2$$ I mostly seen $$E=mc^2$$ from my childhood, and when I was learning problem solving in relativistic mechanics I had seen $$E^2=(mc^2)^2...

1 answer  ·  posted 1y ago by deleted user  ·  edited 12mo ago by deleted user

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Q&A Clear up confusion on Minkowski signature

All given metrics are for orthonormal-basis. 2 dimensional spacetime : I saw that Minkowski Metric looks like this : $$\pmatrix{-1 &amp; 0 \\ 0 &amp; 1}$$ or $$\pmatrix{1 &amp; 0 \\ 0 &amp; -1}...

1 answer  ·  posted 1y ago by deleted user  ·  edited 1y ago by deleted user

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Q&A What is Ether theory? (I think the book I read is misinterpreting Ether)

I was reading about Ether, Maxwell and Young-double-slit experiment. I got a question about Ether law. Let me say what I read about Ether Law. Suppose, a boat is traveling with Adverse of Water ...

2 answers  ·  posted 1y ago by A person who doesn't know anything‭  ·  edited 1y ago by A person who doesn't know anything‭

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Q&A How does probability conservation work in Dirac's original formulation of relativistic QM?

I asked this question on Stack Exchange, and didn't get an answer, but maybe someone here will be able to help. In non-relativistic quantum mechanics, the normalization condition for position eige...

1 answer  ·  posted 2y ago by Ezekiel‭  ·  last activity 2y ago by Derek Elkins‭

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Q&A Unusual way to write spacetime coordinates/metric: Is there any downside?

In special relativity, spacetime coordinates are normally given as $$(ct, x, y, z) \tag{S}$$ with the metric being either $$g = \operatorname{diag}(-1,1,1,1) \tag{+}$$ or $$g = \operatorname{d...

1 answer  ·  posted 2y ago by celtschk‭  ·  last activity 2y ago by dmckee‭

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