Sagittarius A-Star's latest activity
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Sagittarius A-Star replied to the thread High School Einstein equations don't work at large scale?.Newton's law of gravitation predicts a too slow precession of planet Mercury’s orbit, mainly because it did not include spacetime... -
Sagittarius A-Star reacted to A.T.'s post in the thread High School I don't understand the Michelson–Morley experiment with
Like.
Not being curved but flat is also a geometrical property. Why is it OK to assume that 'nothing' is specifically flat. -
Sagittarius A-Star reacted to Demystifier's post in the thread Graduate Entanglement swapping and Bohmian mechanics with
Informative.
This, in essence, is very simple. Consider a product state $$|\psi\rangle = |A\rangle |B\rangle$$ Any state can be written as a... -
Sagittarius A-Star replied to the thread High School Einstein equations don't work at large scale?.Consider in the lab frame a test-charge, moving parallel to an infinite current carrying neutral wire. In the lab frame there is a...
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Sagittarius A-Star replied to the thread High School Einstein equations don't work at large scale?.If you define "time" like Einstein did (Time is what a clock measures), then it was experimentally verrified, that time is not absolute...
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Sagittarius A-Star replied to the thread High School I don't understand the Michelson–Morley experiment.Can it be explained without spacetime curvature, that the magnitude of light deflection near the Sun (1.75 arcseconds, as measured 1919...
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Sagittarius A-Star reacted to Nugatory's post in the thread High School I don't understand the Michelson–Morley experiment with Like.
Then what does a ruler measure?
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Sagittarius A-Star reacted to Dale's post in the thread High School I don't understand the Michelson–Morley experiment with Like.
There is 1 astronomical unit of space between the sun and the earth. You can use the word “nothing” to refer to space if you like...
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Sagittarius A-Star replied to the thread Undergrad Transit time for a round trip to Alpha Centuri....No, you can't. With reference to the traveler's restframe, the distance between Earth and Alpha Centauri is length-contracted, which...
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Sagittarius A-Star replied to the thread Space Stuff and Launch Info.Some reasons are discussed: Source...
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Sagittarius A-Star replied to the thread Space Stuff and Launch Info.China's plan for Chang'e 7 and a moon base:
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Sagittarius A-Star replied to the thread Space Stuff and Launch Info.Source...
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Sagittarius A-Star reacted to Matterwave's post in the thread High School What Medium Does Light Travel Through in Space? with Like.
I don't have deep insights into the QED vacuum. This is not a topic I have studied in detail. This statement seems legit to me. A lot...
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Sagittarius A-Star replied to the thread Space Stuff and Launch Info.Article about the Russian internet satellite constellation Rasvet...
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Sagittarius A-Star reacted to Matterwave's post in the thread High School What Medium Does Light Travel Through in Space? with Informative.
Note that QED is the theory of the electromagnetic interaction. In other words, it is the theory of EM fields + electron (charged)...