A physicist and his son go to a petting zoo. They come up on this animal and of course the physicist asks his son what it is. The son says "Daddy thats a rooster!", the physicist shakes his head "Son, its a lambda".
What kind of car does Gordon Freeman drive?
Studying waveforms as a dyslexic can be depressing.
When I can't calculat lambda, I just feel sinusoidal.
So one physicist asks another physicist
So what's new? The physicists responds, C over Lambda.