We may repeat Thomus Youngs experiment with glass slab in path of one of the rays. Check if the fringes tally the location as per the calculation ( Assuming that the light regains the speed ) If they do not tally then light may not be regaining the speed.

2. Actually, it’s a bit more simple, as ‘absolute space’ didn’t exist in the Newtonian view: the only concern was the velocity of light relative to the observer (what you would call v). Arago expected that light arriving at different relative speeds would be deflected by different angles, but this in fact didn’t happen: as far as the prism was concerned, the speed of light was the same for light from every star.

I have some questions.

1. Arago found that all rays from all stars were prone to the same deviation. But what about coluor? Surely, starlight of different colours must have been deflected by different angles. Wouldn’t one interpretation of this be that corpuscles with different colous have different speeds?
What is the general view of colours in Newton’s corpuscular theory? Are the coluors connected to the speeds of the corpuscles, or to their mass?

2. Suppose that light with velocity v relative to the observer hits a prism that is stationary relative to the observer. Is it correct (as I understand it) that Newton’s corpuscular theory predicts that the prism will deflect the light at different angles measured by the observer, depending upon the observer’s and the prism velocity u relative to absolute space, since the absolute velocity c of the incoming light will be different at different values of u, although v is held constant? (v, u, and c are vectors)?
Is it also so that Arago found no such differences?

Thanks in advance and regards,

Erland Gadde

2.

FYI – I’m a first time visitor, via The Giant’s Shoulders #1 on Blog Around the Clock. I see that TGS is basically your idea to begin with, so I’m doubly impressed. Somehow I missed your classic science papers challenge until now. I’m looking forward to reading those posts, as well as the rest of your blog.

“I can’t wait to see where the path goes next.”

I’m with you on that – the science and the technology are progressing so rapidly it’s hard to imagine what we’ll be able to do in a few years.