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Re: Astronomicheskaya nedelya s 19 po 25 marta 2012 goda
22.03.2012 23:20 | A.P. Vasi
Vot obsuzhdenie
Ladno esli by ono prosto neadekvatnoe, chto dlya astrofiziki norma,
tak eshe chto obidno aby kto tam iz obsuzhdavshih hot' byl pri pamyati.
A byt' pri pamyati nado, chtoby pomnit' zavety relyativistov,
relyativisty otmenili sredu v prostranstve - efir, i skazali chto tam
pustota, potomu chto trudno efir schitat' bylo,
a svet v efire kak kolebaniya analogichnye zvuku, opisal Tomas Yung,
i privel pryamye resheniya dlya kolebanii v sredah Dopler, do 1900 goda.
Potom pridumali relyativizm, tol'ko trudno bylo ob'yasnit'
prichinu sveta i zaderzhku sveta v prostranstve, i pridumali fotony
v 1924-26, mol fotony eto chasticy kotorye letyat v pustote, tol'ko
oni ne pravy potomu kak foton proletaet naprimer steklo,
do stekla skorost' bol'shaya v stekle medlennaya, posle stekla opyat'
bol'shaya, - tak vot chasticy na takoe ne sposobny, eto svoistvo
tol'ko dlya sred, tak kak chastica esli snizila skorost', to uvelichit' ona
uzhe ne mozhet.
A potom sdelali radiopriemnik svch, i napravili ego v kosmos, poluchili
shum, nabezhavshie genii na etot shum pridumali chto etot shum
- vechnyi otgolosok bol'shogo vzryva, - zapostulirovali i pipec,
s teh por eto schitaetsya podtverzhdeniem teorii bol'shogo vzryva -
a kak po mne podtverzhdenie nizkogo professionalizma astrofizikov.
Dazhe ne ponimayu kogda astrofiziki poimut chto u nih est' trudnosti.
Ladno vernemsya k
-
U pustogo prostranstva ne mozhet byt' plotnosti.
U vakuuma est' tol'ko krivizna.
Plotnost' tol'ko u sred.
A ot sredy v prostranstve relyativisty otkazalis', tak kakogo ul'ya
togda plotnost' sredy ispol'zovat' v vakuume.
-------------------
Re: Osobennosti Bol'shogo vzryva i rasshireniya Vselennoi.
Otvet #630 : Segodnya v 21:55:38
Ne nado "dogadyvat'sya" i predpolagat', chto "vernee".Estestvenno, chto kriticheskaya plotnost' padaet v obratnoi proporcii kvadratu razmerov metagalaktiki.
Est' teoriya BV i ee izlozhenie dazhe v populyarnyh monografiyah i uchebnikah.
Prosto cherpaite informaciyu ottuda.
Kriticheskaya plotnost' energii vo Vselennoi nepreryvno umen'shaetsya i byla raneee bol'she v desyatki poryadkov raz.
No, ot etogo ona ne perestala byt' kriticheskoi, t.k. eto teoreticheskaya velichina.
Real'naya plotnost' energii vo Vselennoi ochen' blizka k kriticheskoi(s tochnost'yu1-2%) i takzhe so vremenem padaet, ostavayas' blizkoi k kriticheskoi.
Poetomu Vselennaya (pr-vo) ploskaya.
Vselennaya mozhet byt' ploskoi tol'ko pri beskonechnyh masse i razmerah.
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