XPost: sci.physics.relativity, sci.physics

George Hammond wrote:

On Monday, December 18, 2023 at 10:30:32 AM UTC-5, Tom Roberts wrote:

On 12/8/23 4:45 PM, George Hammond wrote:

If you use a clock that is "slow" by a factor "a" where a=a (t), and
likewise use a ruler that is SHORT by the same factor "a" [...]

In GR, no clock is ever "slow" and no ruler is ever "short" -- you are
confusing a coordinate difference with an invariant duration or length.
Tom Roberts

124 124 – [George H̶a̶m̶m̶o̶n̶d̶ M̶S̶ P̶h̶y̶s̶i̶c̶s̶]124 – [Cape Cod Massachusetts USA]
Dear ; DR. TOM ROBERTS, FERMILAB inc.: – Look "Mr. Roberts": –
.... You have said: –
"In GR, no clock is ever "slow" and no ruler is ever "short" -- you are confusing a coordinate difference with an invariant duration or length."
.
G̶H̶: – a̶n̶d̶ I̶ h̶a̶v̶e̶ a̶n̶s̶w̶e̶r̶e̶d̶ t̶h̶a̶t̶ c̶o̶m̶p̶l̶e̶t̶e̶l̶y̶ i̶n̶ m̶y̶ p̶o̶s̶t̶ "#123" (b̶e̶l̶o̶w̶)!

except that's not a tensor, but a matrix. Different rules, appliances and configuration. Try again. With something that makes sense.

𝗨𝗦_𝘀𝗲𝗻𝗮𝘁𝗼𝗿_𝗰𝗮𝗹𝗹𝘀_𝗳𝗼𝗿_𝗯𝗼𝗺𝗯𝗶𝗻𝗴_𝘄𝗲𝘀𝘁𝗲𝗿𝗻_𝗘𝘂𝗿𝗼𝗽𝗲
Lindsey Graham wants 𝘁𝗵𝗲_𝗘𝗨_𝗵𝗲𝗮𝗱𝗾𝘂𝗮𝗿𝘁𝗲𝗿𝘀 “blown off the map”
https://r%74.com/news/589834-lindsey-graham-bomb-iran/

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