Walter Lewin explains the properties of vector cross product

Transcript

if you know Vector [Music] a and you know Vector [Music] B and you know that the angle is Theta then the cross product C equals A cross B is the magnitude of a Time the magnitude of B time the S of theta what is the direction of the vector a cross product is always perpendicular to both A and B it can either come out the Blackboard or it can go in the Blackboard and you'll see that the cork screw goes into the potato in that's the direction then of the vector