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Re: Chernaya dyra
6.02.2012 22:30 | A.P. Vasi

Uchityvaya chto moderatory tam periodicheski glupost' udalyayut
Skopiruyu pozor astrofizikov syuda.

\\\Citata: Sergei Popov ot Segodnya v 18:03:53
Avtor zamahnulsya na samoe svyatoe - na interpretaciyu kosmologicheskogo krasnogo smesheniya kak na rezul'tat rasshireniya prostranstva. On polagaet, chto vse svoditsya k dopleru i gravitacionnomu smesheniyu. Sootvetstvenno, govorit' o tret'em tipe - nekorrektno.
Esli u avtora temy est' samoe ili ne samoe svyatoe, to chto on delaet v "Gorizonty nauki"?
Est' zhe mnozhestvo religioznyi forumov.
Nu i glavnoe, Sergei Popov ne meshalo by nauchit'sya chitat', kak minimum poznakomit'sya, chto takoe Dopler effekt.
K svedeniyu:
Effékt Dóplera izmenenie chastoty i dliny voln, registriruemyh priemnikom, vyzvannoe dvizheniem ih istochnika i/ili dvizheniem priemnika.
Tak kak dlya rasprostraneniya elektromagnitnyh voln ne trebuetsya material'naya sreda, mozhno rassmatrivat' tol'ko otnositel'nuyu skorost' istochnika i nablyudatelya.
To est', nikakogo smesheniya spektrov v sledstvie effekta Doplera dlya vzaimno nepodvizhnyh istochnika i nablyudatelya ne budet. A esli avtor (John Woodruff Simpson Fellow) upominaet o effekte Doplera, to eto v lyubom raze oznachaet dvizhenie istochnika sveta otnositel'no nablyudatelya, to est' ni o kakom "zamahnulsya na samoe svyatoe - na interpretaciyu kosmologicheskogo krasnogo smesheniya kak na rezul'tat rasshireniya prostranstva" rechi i blizko net.
Po samoi stat'e:
rassmatrivayutsya trivial'nye prostranstva s trivial'noi metrikoi i dokazyvaetsya glavnoe po mneniyu avtora:
Whats interesting, of course, is that because the two sets of coordinates are different (one inertial, the other not), the two decompositions are generally not equal, but the final results are the same, as they should be because the underlying physics is identical. Tipa - bezrazlichno, chem obuslovleno krasnoe smeshenie, oni oba privodyat k odnomu rezul'tatu potomu chto osnovnaya fizika identichna.
Primerno tak u nego i poluchaetsya.\\\


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