"Jeff" napisal w wiadomosci
...

Once mo
""In 1818 Arago found that the refraction of a prism for star light
was the
same for light incident in the direction of the earth's orbital
velocity v
as for that coming in the opposite direction. This unexpected null result
was explained that same year by Fresnel's ether-dray theory, which
assumed
partial ether entrainment in transparent media by an amount depending
upon
the first power of v." From: http://www.3rd1000.com/chronoatoms.htm

Today's spectrograph astronomers assume that the effect is not null.

It seems to me that today's astronomers are wrong because in physics are
still null result.
So I am looking for the result from communication with the spacecraft.
S*


Earth's rotation is about 465.1 m/s
Say the average frequency of visible light is 500THz

doppler shift is (Vr/C)*F = (465/ 3 * 10^8)*500 * 10^12 = 7.75 10^8Hz
So to see the shift you will need to be able to observe your light
frequency to an accuracy of about 0.00015%. Which would have been
impossible for Arago.

"In 1818 Arago found that the refraction of a prism for star light was the
same for light incident in the direction of the earth's orbital velocity v
as for that coming in the opposite direction".

The orbital speed is about 30 km/s. Todays radio methods are adequate for
0.5 and for 30.

Of course the above figures are only true for light coming directly at the
observer ie on the horizon, so for other angles there is a Cos Theta term
to reduce the effect even more (to zero directly overhead).

The rotational speed was too small for everybody till 1925. In this year the
Michelson and Gale detected the Earth's rotation.. But nobody detect the
orbital speed.

The same is with the spacecrafts. The diurnal effect is confirmed. I am
looking for the annual effect.
S*
S*