My own worldview would say we don't know the speed of light in the space medium. How do you expect me provide evidence for us not having evidence?
And your worldview seems to be to ignore any evidence contrary to your world view.
Have you forgotten the earlier reply to YOU that I've quoted below
[1]?
In it, I show that the distance to the moon has been measured by means quite independent of the velocity of light.
The most recent of those using parallax measurements by Astronomers O'Keefe and Anderson refined by "refined by in
1962 by Irene Fischer, who incorporated updated geodetic data to produce a value of 384403.7±2 km."
So the distance to the moon using laser ranging agrees with the distance measured by parallax to within ±2 km in 384,403.7 km.
That's within one part in almost 200,000.
Provided that you include the space between here the moon as "space medium" I'd claim that the speed of light in the space medium is known.
But "The Bishop Challenge" is about the justification of the claim in the Wiki:
The Moon
The moon is a sphere. It has a diameter of 32 miles and is located approximately 3000 miles above the surface of the earth.
Would you care to justify that claim?
[1] | The astronomer has as much idea of distance to his studied objects, as does a mortician who has never seen a dead man.
Really? This is just from Wikipedia to save time over something you will debunk simply with argumentum ad absurdum
Lunar distance, History of measurement Lunar eclipse Early attempts to measure the distance to the Moon exploited observations of a lunar eclipse combined with knowledge of Earth's radius and an understanding that the Sun is much further than the Moon. By observing the geometry of a lunar eclipse, the lunar distance can be calculated using trigonometry.
The earliest account of an attempt to measure the distance to the Moon using this technique was by the 4th-century-BC Greek astronomer and mathematician Aristarchus of Samos and later by Hipparchus, whose calculations produced a result of 59-67 R⊕. This method later found its way into the work of Ptolemy, who produced a result of 64 1/6 R⊕ at its farthest point.
The estimates of Aristarchus of Samos put the distance as 377,000 to 427,000 km and that of Ptolemy 408,000 km at farthest point. The current values are perigee of 363,300 and apogee of 405,500 km.
I would not criticise those old astronomers for these measurements with nothing but the unaided eye and at the most, a quadrant.
Then to An expedition by French astronomer A.C.D Crommelin observed meridional transits of the Moon (the moment when the Moon crosses an imaginary great circle that passes directly overhead and through the poles) on the same night from two different locations. Careful measurements from 1905 through 1910 measured the angle of elevation at the moment when a specific lunar crater (Mösting A) crossed the meridian, from stations at Greenwich and at Cape of Good Hope, which share nearly the same longitude. A distance was calculated with an uncertainty of ± 30 km and remained the definitive lunar distance value for the next half-century. And
Astronomers O'Keefe and Anderson calculated the lunar distance by observing 4 occultations from 9 locations in 1952. They calculated a mean distance of 384407.6±4.7 km, however, the value was refined by in 1962 by Irene Fischer, who incorporated updated geodetic data to produce a value of 384403.7±2 km. Those old astronomers seemed to have a pretty good idea of distances, far better and far more consistent than any flat earthers. And the newer ones with much more precise equipment seem able to get correspondingly precise measurements.
|