The state one's hair assumes after spending copious amounts of time attempting and ultimately failing to solve a difficult physics problem. It occurs when you run your hand through your hair in frustration of being unable to solve the problem.
I was in the library all night doing physics, you should have seen my physics hair dude.
by ltm4 October 24, 2011
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The Phenomenon of the fringe being lifted to great heights without the aid of gel caused by having been sitting with one's head resting on one's non-writing hand for the extended time required to complete Physics problems.
*Upon running into a Physics room-mate in the kitchen at 2am exhibiting the symptoms:

"Wow, dude. Nice Physics hair."
by seeco March 14, 2010
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