Grinkle's latest activity
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Grinkle replied to the thread I I don't see how a black hole's event horizon can be crossed.One "B" level poster to another .... What I read from @PeroK is not that using the word 'perspective' is objectively wrong, rather... -
Grinkle reacted to PeroK's post in the thread I I don't see how a black hole's event horizon can be crossed with
Like.
When I was learning relativity I realised that all this about "perspectives" and "observers disagreeing" was unnecessary and leading the... -
Grinkle reacted to Dale's post in the thread I I don't see how a black hole's event horizon can be crossed with Like.
Yes. Coordinates are optionally added to a manifold, but only in a manner in which all coordinates can be used to write the laws of...
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Grinkle reacted to PeterDonis's post in the thread I I don't see how a black hole's event horizon can be crossed with Like.
True. But they can exist for a very, very, very, very, very long time. For example, the expected evaporation time by Hawking radiation...
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Grinkle reacted to RUTA's post in the thread Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect with Like.
I just retired from 37 years of teaching undergrad physics at Elizabethtown College (not R1, I was paid to teach). I have always wanted...
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Grinkle replied to the thread Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect.Thanks for taking the time to give that response, much appreciated. It has got to be fatiguing continually articulating things at a "B"...
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Grinkle replied to the thread Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect.@RUTA SR threads here often have a shared plotline, which I'll illustrate by example below - Q: Why do clocks move differently in...
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Grinkle reacted to phinds's post in the thread I What Are the Limits of the Universe According to Cosmologists? with Like.
If it is infinite now then it HAD to be infinite at the time of the singularity because you can't get from finite to infinite The...
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Grinkle reacted to PeroK's post in the thread I What Are the Limits of the Universe According to Cosmologists? with Like.
The NG article is not worth reading. According to Introduction to Modern Cosmology by Liddle: The Big Bang model is reliable back to...