A series of random dots presented to an observer in order to measure his ability to detect motion throughout the visual field

Having spavin (said of a horse). / Old, worn out, obsolete (said figuratively of a person).

In a quixotic manner.

A form of helical scan in which the tape is wrapped around the head drum for a full 360 degrees (the tape looking like the lowercase Greek letter alpha). There is only one head which writes a compl...