Coriolis Effect

Coriolis Effect

This is a video by students from MIT explaining the physics of Coriolis effect.

In physics, the Coriolis effect is a deflection of moving objects when the motion is described relative to a rotating reference frame. In a reference frame with clockwise rotation, the deflection is to the left of the motion of the object; in one with counter-clockwise rotation, the deflection is to the right.

Coriolis ForceEdit

Coriolis effect is a consequence of the Coriolis force. Coriolis force is an inertial force (or a pseudo-force) which acts on object placed in a rotating frame of reference. The Coriolis force acts in a direction perpendicular to the rotation axis and to the velocity of the body in the rotating frame and is proportional to the object's speed in the rotating frame.


The vector formula can be given as:

$ F_C = -2m \cdot ( \Omega \times v) $
m is the mass of the object
Ω is the angular velocity vector
v is relative velocity between the rotating system and object

This can be rewritten as:

$ F_C = m \cdot a_C $

where aC is Coriolis acceleration which is given by: $ a_C = -2 \Omega \times v $