Induced movement

It is interpreted in terms of the change in the location of an object due to the movement in the space around it.

A stationary object appears to move in the opposite direction to the background.

For example, the moon on a cloudy, windy night appears to be racing through the sky opposite to the direction of the clouds, though the moon is essentially stationary in the sky and only appears to be moving due to the movement of the clouds.

[2] Induced movement was reported by Ptolemy (ca.

Ptolemy's theory of visual perception: An English translation of the Optics with introduction and commentary.