Re: Relativistic aberration

Liste des GroupesRevenir à p relativity 
Sujet : Re: Relativistic aberration
De : ttt_heg (at) *nospam* web.de (Thomas Heger)
Groupes : sci.physics.relativity
Date : 17. Jul 2024, 08:05:15
Autres entêtes
Message-ID : <lfp8pbFkr1mU1@mid.individual.net>
References : 1 2 3 4 5 6 7 8 9 10 11 12
User-Agent : Mozilla Thunderbird
Am Dienstag000016, 16.07.2024 um 16:47 schrieb gharnagel:

 Yes, I understand what you're saying.  What needs to be understood is
just how many molecules make up the normal matter around us (think
Avogadro's number).  Interstellar space contains between 20 and 50
hydrogen atoms per cubic cm:
 https://en.wikipedia.org/wiki/Interstellar_medium
 Half of the distance to the Large Magellanic Cloud is outside our
galaxy,
so the density is even lower.  At 50/cm3, the entire 168,000 light years
amounts to only a two meter thickness of hydrogen at STP!  So I'm afraid
the astrophysicists cannot use that to save their precious
speed-of-light
skins.
 "Why is the speed of light so slow when the universe is such a really,
really big place?" -- G. L. Harnagel
This is a tautology:
What we see in the night sky is actually our own past light-cone.
This means: light is relatively slow for the wastness of the universe, hence we can see everything only with a certain delay and the further away, the longer the delay, according to x = c* t
(with x= distance in meters, t = delay in seconds).
This 'longer away' is usually measured in light years and the delay in years.
Since the night sky shows only a delayed image of past events, the speed of light cancels out of the equations and we can put any value into it and always get a valid picture of the universe.
So we only assume, that light moves always with ~300 million meters per second through the entire universe.
But if light would speed up or slow down, we would not be able to measure this, because we always see the own light cone in the night sky and c is already embedded into it (for whatever a value c actually has in outer space).
TH

Date Sujet#  Auteur
14 Jul 24 * Relativistic aberration213Richard Hachel
15 Jul 24 +* Re: Relativistic aberration106gharnagel
15 Jul 24 i+* Re: Relativistic aberration3Maciej Wozniak
15 Jul 24 ii`* Re: Relativistic aberration2Richard Hachel
15 Jul 24 ii `- Re: Relativistic aberration1Maciej Wozniak
15 Jul 24 i`* Re: Relativistic aberration102Richard Hachel
15 Jul 24 i `* Re: Relativistic aberration101gharnagel
15 Jul 24 i  `* Re: Relativistic aberration100Richard Hachel
15 Jul 24 i   `* Re: Relativistic aberration99gharnagel
15 Jul 24 i    +- Re: Relativistic aberration1Maciej Wozniak
15 Jul 24 i    +- Re: Relativistic aberration1Richard Hachel
15 Jul 24 i    `* Re: Relativistic aberration96Richard Hachel
15 Jul 24 i     `* Re: Relativistic aberration95gharnagel
15 Jul 24 i      `* Re: Relativistic aberration94Richard Hachel
15 Jul 24 i       `* Re: Relativistic aberration93gharnagel
15 Jul 24 i        +* Re: Relativistic aberration91Richard Hachel
16 Jul 24 i        i`* Re: Relativistic aberration90gharnagel
16 Jul 24 i        i `* Re: Relativistic aberration89Richard Hachel
16 Jul 24 i        i  `* Re: Relativistic aberration88gharnagel
17 Jul 24 i        i   `* Re: Relativistic aberration87Thomas Heger
17 Jul 24 i        i    `* Re: Relativistic aberration86gharnagel
17 Jul 24 i        i     +* Re: Relativistic aberration78Maciej Wozniak
17 Jul 24 i        i     i`* Re: Relativistic aberration77gharnagel
17 Jul 24 i        i     i `* Re: Relativistic aberration76Maciej Wozniak
18 Jul 24 i        i     i  +* Re: Relativistic aberration3gharnagel
18 Jul 24 i        i     i  i+- Re: Relativistic aberration1Reign Batura
31 Jul 24 i        i     i  i`- Re: Relativistic aberration1gharnagel
10 Aug 24 i        i     i  `* Re: Relativistic aberration72gharnagel
10 Aug 24 i        i     i   `* Re: Relativistic aberration71Maciej Wozniak
11 Aug 24 i        i     i    `* Re: Relativistic aberration70gharnagel
11 Aug 24 i        i     i     +- Re: Relativistic aberration1Kalakos Angelopoulos
11 Aug 24 i        i     i     `* Re: Relativistic aberration68gharnagel
11 Aug 24 i        i     i      +- Re: Relativistic aberration1Szűcs Kővári
11 Aug 24 i        i     i      `* Re: Relativistic aberration66gharnagel
11 Aug 24 i        i     i       `* Re: Relativistic aberration65gharnagel
11 Aug 24 i        i     i        +* Re: Relativistic aberration5Ross Finlayson
11 Aug 24 i        i     i        i`* Re: Relativistic aberration4Ross Finlayson
11 Aug 24 i        i     i        i `* Re: Relativistic aberration3Python
12 Aug 24 i        i     i        i  `* Re: Relativistic aberration2gharnagel
12 Aug 24 i        i     i        i   `- Re: Relativistic aberration1Ross Finlayson
12 Aug 24 i        i     i        `* Re: Relativistic aberration59Maciej Wozniak
12 Aug 24 i        i     i         `* Re: Relativistic aberration58gharnagel
12 Aug 24 i        i     i          `* Re: Relativistic aberration57Maciej Wozniak
12 Aug 24 i        i     i           +* Re: Relativistic aberration4Python
12 Aug 24 i        i     i           i`* Re: Relativistic aberration3Python
12 Aug 24 i        i     i           i `* Re: Relativistic aberration2Maciej Wozniak
12 Aug 24 i        i     i           i  `- Re: Relativistic aberration1Python
12 Aug 24 i        i     i           `* Re: Relativistic aberration52gharnagel
12 Aug 24 i        i     i            `* Re: Relativistic aberration51Maciej Wozniak
12 Aug 24 i        i     i             +* Re: Relativistic aberration3Python
12 Aug 24 i        i     i             i`* Re: Relativistic aberration2Maciej Wozniak
12 Aug 24 i        i     i             i `- Re: Relativistic aberration1Python
12 Aug 24 i        i     i             `* Re: Relativistic aberration47gharnagel
12 Aug 24 i        i     i              +* Re: Relativistic aberration43Maciej Wozniak
13 Aug 24 i        i     i              i`* Re: Relativistic aberration42gharnagel
13 Aug 24 i        i     i              i +* Re: Relativistic aberration40Python
13 Aug 24 i        i     i              i i+* Re: Relativistic aberration13Ross Finlayson
13 Aug 24 i        i     i              i ii+* Re: Relativistic aberration11Python
13 Aug 24 i        i     i              i iii`* Re: Relativistic aberration10Ross Finlayson
13 Aug 24 i        i     i              i iii `* Re: Relativistic aberration9Python
13 Aug 24 i        i     i              i iii  `* Re: Relativistic aberration8Ross Finlayson
13 Aug 24 i        i     i              i iii   +- Re: Relativistic aberration1Python
13 Aug 24 i        i     i              i iii   `* Re: Relativistic aberration6Javis Orbán
14 Aug 24 i        i     i              i iii    `* Re: Relativistic aberration5Thomas Heger
14 Aug 24 i        i     i              i iii     +* Re: Relativistic aberration2Athel Cornish-Bowden
14 Aug 24 i        i     i              i iii     i`- Re: Relativistic aberration1Balabaanoff Bibitinsky
14 Aug 24 i        i     i              i iii     `* Re: Relativistic aberration2Python
15 Aug 24 i        i     i              i iii      `- Re: Relativistic aberration1Thomas Heger
13 Aug 24 i        i     i              i ii`- Re: Relativistic aberration1Mozhar Bairamkulov
13 Aug 24 i        i     i              i i`* Re: Relativistic aberration26gharnagel
13 Aug 24 i        i     i              i i `* Re: Relativistic aberration25Python
13 Aug 24 i        i     i              i i  `* Re: Relativistic aberration24gharnagel
13 Aug 24 i        i     i              i i   `* Re: Relativistic aberration23Python
13 Aug 24 i        i     i              i i    `* Re: Relativistic aberration22gharnagel
13 Aug 24 i        i     i              i i     `* Re: Relativistic aberration21Richard Hachel
13 Aug 24 i        i     i              i i      +* Re: Relativistic aberration5gharnagel
13 Aug 24 i        i     i              i i      i+* Re: Relativistic aberration2Richard Hachel
14 Aug 24 i        i     i              i i      ii`- Re: Relativistic aberration1gharnagel
13 Aug 24 i        i     i              i i      i`* Re: Relativistic aberration2Richard Hachel
14 Aug 24 i        i     i              i i      i `- Re: Relativistic aberration1Ross Finlayson
13 Aug 24 i        i     i              i i      +* Re: Relativistic aberration13Paul.B.Andersen
14 Aug 24 i        i     i              i i      i`* Re: Relativistic aberration12Python
14 Aug 24 i        i     i              i i      i `* His passion is to persecute scapegoats, but he fears evidences...11JC_Lavau
14 Aug 24 i        i     i              i i      i  +* "Persecution" is the desperate cry of cranks being confronted with facts8Python
14 Aug 24 i        i     i              i i      i  i+* Re: "Persecution" is the desperate cry of cranks being confronted with facts2Python
14 Aug 24 i        i     i              i i      i  ii`- Re: "Persecution" is the desperate cry of cranks being confronted with facts1Richard Hachel
14 Aug 24 i        i     i              i i      i  i`* Re: "Persecution" is the desperate cry of cranks being confronted with facts5Richard Hachel
14 Aug 24 i        i     i              i i      i  i `* Re: "Persecution" is the desperate cry of cranks being confronted with facts4Python
14 Aug 24 i        i     i              i i      i  i  +* Re: "Persecution" is the desperate cry of cranks being confronted with facts2Richard Hachel
14 Aug 24 i        i     i              i i      i  i  i`- Re: "Persecution" is the desperate cry of cranks being confronted with facts1Python
15 Aug 24 i        i     i              i i      i  i  `- Re: "Persecution" is the desperate cry of cranks being confronted with facts1Athel Cornish-Bowden
14 Aug 24 i        i     i              i i      i  +- Re: His passion is to persecute scapegoats, but he fears evidences...1Richard Hachel
14 Aug 24 i        i     i              i i      i  `- Re: His passion is to persecute scapegoats, but he fears evidences...1Richard Hachel
14 Aug 24 i        i     i              i i      +- Re: Relativistic aberration1Python
15 Aug 24 i        i     i              i i      `- Re: Relativistic aberration1Thomas Heger
13 Aug 24 i        i     i              i `- Re: Relativistic aberration1Maciej Wozniak
12 Aug 24 i        i     i              `* Re: Relativistic aberration3Josh Vassilopulos
12 Aug 24 i        i     i               `* Re: Relativistic aberration2Python
12 Aug 24 i        i     i                `- Re: Relativistic aberration1Pete Beaulieu
18 Jul 24 i        i     `* Re: Relativistic aberration7Thomas Heger
18 Jul 24 i        i      `* Re: Relativistic aberration6gharnagel
15 Jul 24 i        `- Re: Relativistic aberration1Richard Hachel
31 Jul 24 +* Re: Relativistic aberration69Sylvia Else
7 Aug 24 `* Re: Relativistic aberration37JanPB

Haut de la page

Les messages affichés proviennent d'usenet.

NewsPortal