Chris,
I didn't get e-mail notification about your text. I read it in BAUT forum before it was deleted, so obviously I couldn't know that it will be deleted. Your assumption about my re-posting it isn't true. The guy who re-posted it confessed already,
Quote:
Originally Posted by CodeSlinger >
I subscribed to this thread in order to keep an eye on it. I got an email notification this morning that Chris Hillman had responded to this thread. But I don't see his post for some reason, so I'm reposting it below as it appeared in the notification I got.
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you just didn't read the whole thread "Einstein's universe", for which I don't blame you since there isn't much there to read. Besides the thread has been terminated before its time for some unknown reason and also before reaching any conclusion.
I don't even have e-mail notifications. I keep BAUT out of my e-mails since I have enough spam to want to suplement it with e-mail notifications from BAUT. I hope it clarifies the misunderstanding.
But while I'm writing to you I'd like to learn what is your opinion on conservation of energy. There are at least two possible points of view: (i), which I call Feynman's, since it is in his texts from which I learned physics, that energy (defined as a component of 4-momentum) and momentum (defined as the rest of 4-momentum) are conserved separately, and (ii), which I call Baez's (your friend who tried to explain it to me a few times but poor me didn't understand a bit), that only the whole 4-momentum is conserved and that Feynman's idea applies only to Newtonian physics. Which means, according to Baez, that in relativity energy (as defined before) and momentum (as defined before) are not separately conserved. Which one is true in your opinion? I hope that you see that both can't be true simultaneously.