Recent content by Npac123

Thank you for your reply. That's what I suspected, but wanted to know from someone with deeper understanding. The Kaluza-Klein theory, as with other theories, seen to have mathematical elegance but, as you note, lack the physical evidence. As a non physicist, it's a bit surprising that...

I just finished reading Walter Isacson's Einstein. I note that Einstein's motivation for Special Relativity was the constant speed of light as shown by Michelson and Morley, and his motivation for General Relativity was the equivalence of gravity and acceleration as experienced, for example, in...