[mr_mitm]

You probably mean the Solvay conference. I just wanted to append this link to your comment: https://upload.wikimedia.org/wikipedia/commons/thumb/6/6e/So...

It really is a remarkable picture, but I'd like to note that it's all physicists, not scientists in general. It was the golden era of physics.

[darkwater]

I know it's a typo but it's Solvay, not Solay.

[quaintdev]

Yes this is the one.