Identify and connect to a word that has a special significance in the world of science:

Although, as Rogi pointed out, the first image was misleading, this question was cracked by superbrat , wanderlust , udupendra , Atul Mathew , varuns88 , p vs np and Rogi.

@rogi: Thanks mate! My bad, I was mislead and too soon to jump on an img search result :-(

superbrat, wanderlust, udupendra, Atul Mathew, varuns88, p vs np and Rogi