On Friday, March 14, 2025 at 11:41:45 PM UTC-6 Alan Grayson wrote:
On Friday, March 14, 2025 at 11:03:37 PM UTC-6 Brent Meeker wrote: Except he didn't show any such thing and he generally did regard it as a force, although he saw merit in Minkowski's geometric interpretation. Brent Poor choice of a word on my part; he didn't "show" gravity wasn't a force; rather he concluded it from a thought experient of man in free fall. You can conclude this from his direct quote, which I recently read. AG *Here is the quote I referred to above:* *https://en.wikipedia.org/wiki/Equivalence_principle* *"Soon after completing work on his theory of gravity (known as general relativity <https://en.wikipedia.org/wiki/General_relativity>)[6] <https://en.wikipedia.org/wiki/Equivalence_principle#cite_note-6>: 111 and then also in later years, Einstein recalled the importance of the equivalence principle to his work:* *The breakthrough came suddenly one day. I was sitting on a chair in my patent office in Bern. Suddenly a thought struck me: If a man falls freely, he would not feel his weight. I was taken aback. This simple thought experiment made a deep impression on me. This led me to the theory of gravity.* *— **Einstein, 1922*[7] <https://en.wikipedia.org/wiki/Equivalence_principle#cite_note-7>* "* *CMIIAW, but Wiki incorrectly says this is the EP. Doesn't Einstein's statement above just show how he concluded gravity isn't a force, not that gravity is equivalent to acceleration, and not that all bodies fall at the same rate in gravitational fields (the WEP)? AG * On 3/14/2025 2:59 AM, Alan Grayson wrote: Maybe the EP just showed Einstein that graity is not a force, so it must be modeled differently, possibly by geometry? AG On Wednesday, March 12, 2025 at 3:37:55 PM UTC-6 Alan Grayson wrote: As precisely as possible, can anyone describe the function and value of the EP in the construction of GR? Alternatively, how are the field equations implied by the EP? TY, AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/everything-list/e3972b13-1e0d-40fb-b647-3d4befcc0b66n%40googlegroups.com.
