Curl your fingers in the direction of rotation. Your thumb points in the direction of the angular velocity vector. Relationship Between Angular Velocity and Linear Velocity The relationship ...

The red arrow shows the direction of the angular velocity vector. Now for my next definition. Twist: A human rotation about an axis that runs the length of the body. Again, here is an animation ...

Since the angular momentum of the Earth is conserved ... (which it totally is not), then the angular momentum vector and the angular velocity vector are in the same direction with the moment ...