5KBjNRW&v=0&aty=4> <http://qph.is.quoracdn.net/main-qimg-3a63fdd96f69ac52=c68ed315c6826a5?convert_to_webp=true> A famous Har=ard physics professor (Ed Purcell maybe?), said that undergraduate physics=students come in expecting that the hardest thing they'll have to learn wi=l be eith... Read More =/td> H