Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

[Phys-L] Re: Assignment for Einsteinians



Subject:=09Re: Assignment for Einsteinians


On Sat, 2 Jul 2005 at 1:56 AM, Pentcho Valev wrote:

"The situation is simple - it is Newton's particle model rather than=
the wave model that is relevant as one considers the speed of light =
moving through vacuum. According to the particle model, photons are a=
nalogous to bullets and their speed does depend on the speed of sourc=
e or observer.=20
=2E..
In my view, it would be easy to restore student's rationality by star=
ting
=66rom two hypoteses: 1. Speed of light is constant; 2. Speed of ligh=
t is
variable; and derive everything that could be derived from them. The
derivations are not difficult, all students will understand them and,
believe me, ALL final results will confirm the truth of the second
hypothesis."



Considering light as particles is fine for some purposes, including =
the problem of their speed. Regarding the speed aspect, this proposal=
, known as ballistic hypothesis, had been discussed extensively for m=
ore than 100 years. It was abondoned due to hard scientific evidence =
- observation of binary stars, both - their directly observed motions=
and their spectra, according to which the maximum redshift in the li=
ght of one star is seen at the same instant as the maximum blue shift=
in the light of the other. These data are well known since the begin=
ning of the last century.=20
In Relativity, the speed of the bullet generally also depends on mot=
ion of the gun, but this dependence is different from that in Newtoni=
an Physics. It becomes less pronounced and eventually disappears as t=
he speed of bullet approaches c (the bullet becomes a photon)(see, e.=
g. J. P. McKelvey and H. Grotch, Physics for Science and Engineering,=
Harper and Row Publishers, 1978, p. 903). Direct laboratory evidence=
for the source-independence of the light velocity was demonstrated e=
xperimentally as far back as 1964 (T. A. Filippas and J. G. Fox, Phys=
. Rev. 135, p. B1071, 1964)
In scientific matters, one would rather velieve scientific evidence=
rather than Valev's claims.

Moses Fayngold,
NJIT
_______________________________________________
Phys-L mailing list
Phys-L@electron.physics.buffalo.edu
https://www.physics.buffalo.edu/mailman/listinfo/phys-l