Why does light appear to travel diagonally in a light clock for a stationary observer?

[mananvpanchal]

And if air and receiver don't move along with source then also the wave reaches to B then there should not be any sound cone with supersonic planes.

what about my second point?

 

[mananvpanchal]

Hello,

I found some links which says same as I think. Please, look at it.

http://absolute-relativity.be/node/3

http://absolute-relativity.be/node/4

Thanks.