This motion may be approximated by that of the tines of a tuning fork when struck, and could be seen as a sinusoidal or SINE WAVE from the trace of a pen attached to the tine and moving against paper ...

A new study reveals that this “invisibility” happens because the speed of our saccades sets a natural speed limit for what we ...

If you quickly move a camera from object to object, the abrupt shift between the two points causes a motion smear that might ...