Why does light travel backwards in this experiment?

[theCandyman]

I am unsure if this belongs here, but Einstein is talked about in the article and a bit of relativity is mentioned.

http://www.rochester.edu/news/show.php?id=2544

I do not at all understand the explanation given in the article for why this happenes the way it does, can anyone give a simplier recount?

 

[clj4]

I am unsure if this belongs here, but Einstein is talked about in the article and a bit of relativity is mentioned.

http://www.rochester.edu/news/show.php?id=2544

I do not at all understand the explanation given in the article for why this happenes the way it does, can anyone give a simplier recount?

This is just a very badly written popular science article. For a very good explanation , please see here:

http://gregegan.customer.netspace.net.au/APPLETS/20/20.html

 

[theCandyman]

Thanks, clj4! That makes a lot more sence.