CMBR's motion wrt the Earth
in [Relativity]
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From: Inertial on 18 Sep 2009 20:27 "mluttgens" <mluttgens(a)orange.fr> wrote in message news:763cde1b-01d7-4564-94c8-6b99450b482d(a)g23g2000vbr.googlegroups.com... > On 18 sep, 16:53, Sam Wormley <sworml...(a)mchsi.com> wrote: >> mluttgens wrote: >> >> > Let's consider two objects A and B in uniform >> > translatory motion. >> >> > According to SR, if A moves at v toward B, >> > reciprocally, B moves at -v toward A. >> > SR obviously doesn't take into consideration >> > the velocities vA and vB of the objects relative >> > to the CMBR (sometimes rightly called the rest >> > frame of the universe). >> >> I was going to reply similar to PD, for you are >> attributing concepts to SR that predate SR by >> millennia. >> >> Time dilation from A's perspective: >> >> t_B' = γ (t_B - x v/c^2) >> >> Time dilation from B's perspective: >> >> t_A' = γ (t_A - x v/c^2) >> >> where v is the relative velocity between A and B >> and γ = 1/√(1-v^2/c^2) . > > And you forget the CMBR! Because it DOESN'T MATTER !!!!!!!
From: Sam Wormley on 18 Sep 2009 23:02 mluttgens wrote: > On 18 sep, 21:59, PD <thedraperfam...(a)gmail.com> wrote: >> And this is where Marcel will get confused, because he doesn't >> understand that those time intervals are between TWO pairs of events, >> not one pair. And so he tries to apply those equations, for example, >> to the ONE pair of events that is associated with cosmic ray muons >> (birth and decay). > > Rememember Paul B. Andersen's analysis of the cosmic muons. > He considered only one pair of events. > When the CMBR is taken into consideration, it is clear that > time dilation is not mutual. > > Marcel Luttgens Usually we think of time intervals as the "tics" of a clock.
From: Sam Wormley on 18 Sep 2009 23:04 mluttgens wrote: > On 18 sep, 21:37, Sam Wormley <sworml...(a)mchsi.com> wrote: >> >> Time dilation from A's perspective: >> >> ât_B' = γ ât_B >> >> Time dilation from B's perspective: >> >> ât_A' = γ ât_A >> >> where ât represent a time interval, v is the relative velocity >> between A and B, and γ = 1/â(1-v^2/c^2) > > And again, forgetting the CMBR! > > Marcel Luttgens Nothing special about the CMB. All you need is A and B.
From: Sam Wormley on 18 Sep 2009 23:07 mluttgens wrote: > On 18 sep, 16:53, Sam Wormley <sworml...(a)mchsi.com> wrote: >> mluttgens wrote: >> >>> Let's consider two objects A and B in uniform >>> translatory motion. >>> According to SR, if A moves at v toward B, >>> reciprocally, B moves at -v toward A. >>> SR obviously doesn't take into consideration >>> the velocities vA and vB of the objects relative >>> to the CMBR (sometimes rightly called the rest >>> frame of the universe). >> I was going to reply similar to PD, for you are >> attributing concepts to SR that predate SR by >> millennia. >> >> Time dilation from A's perspective: >> >> t_B' = γ (t_B - x v/c^2) >> >> Time dilation from B's perspective: >> >> t_A' = γ (t_A - x v/c^2) >> >> where v is the relative velocity between A and B >> and γ = 1/â(1-v^2/c^2) . > > And you forget the CMBR! > > Marcel Luttgens Let me correct myself-- Time dilation from A's perspective: ât_B' = γ ât_B Time dilation from B's perspective: ât_A' = γ ât_A where ât represent a time interval, v is the relative velocity between A and B, and γ = 1/â(1-v^2/c^2) . Please note that another observer (CMB) is not needed in any way.
From: Dirk Van de moortel on 19 Sep 2009 05:39
mluttgens <mluttgens(a)orange.fr> wrote in message 2243b0c4-1787-459f-80d1-e4b5fb5083c8(a)o36g2000vbl.googlegroups.com > On 18 sep, 18:08, "Dirk Van de moortel" > <dirkvandemoor...(a)nospAm.hotmail.com> wrote: >> Sam Wormley <sworml...(a)mchsi.com> wrote in message >> >> H9Nsm.55993$la3.20752(a)attbi_s22 >> >> >> >> >> >>> mluttgens wrote: >> >>>> Let's consider two objects A and B in uniform >>>> translatory motion. >> >>>> According to SR, if A moves at v toward B, >>>> reciprocally, B moves at -v toward A. >>>> SR obviously doesn't take into consideration >>>> the velocities vA and vB of the objects relative >>>> to the CMBR (sometimes rightly called the rest >>>> frame of the universe). >> >>> I was going to reply similar to PD, for you are >>> attributing concepts to SR that predate SR by >>> millennia. >> >>> Time dilation from A's perspective: >> >>> t_B' = γ (t_B - x v/c^2) >> >> That's only time dilation for x = 0 and x measured >> in B's frame. >> >> >> >>> Time dilation from B's perspective: >> >>> t_A' = γ (t_A - x v/c^2) >> >> ... and that's only time dilation for x = 0 and x measured >> in A's frame. >> >> >> >>> where v is the relative velocity between A and B >>> and γ = 1/√(1-v^2/c^2) . >> >> bit confused? >> >> Dirk Vdm > > Dirk, you improved! Imbecile, you haven't got a clue. Dirk Vdm |