Professor destroys laptop with liquid nitrogen
A physics professor made his feelings about students using laptops in class perfectly clear - by dropping one in -200c liquid nitrogen.
Prof Kieran Mullen of Oklahoma University then threw the laptop - picked up from a student's desk - onto the floor, smashing it into hundreds of pieces.
He did it because he says he's fed up with students focusing on their screens rather than what he is teaching, and wanted to make that point.
However, no student laptops were harmed during his class, Mullen used a defunct computer which he had positioned before the class started.
But his stunt may have backfired… pupils are now watching this video rather than paying attention.
Prof Kieran Mullen of Oklahoma University then threw the laptop - picked up from a student's desk - onto the floor, smashing it into hundreds of pieces.
He did it because he says he's fed up with students focusing on their screens rather than what he is teaching, and wanted to make that point.
However, no student laptops were harmed during his class, Mullen used a defunct computer which he had positioned before the class started.
But his stunt may have backfired… pupils are now watching this video rather than paying attention.
