Changes

Dynamic visual displays include computer screens, television screens, alarm clock displays, dynamic LED billboards, game boy displays, stereoscopic head-mounted displays, and heads-up displays in cars.

Dynamic visual displays include computer screens, television screens, alarm clock displays, dynamic LED billboards, game boy displays, stereoscopic head-mounted displays, and heads-up displays in cars.

Display devices can be point based, ray based, or interference based. Point based devices are based on point sources. These include laptop screens, televisions, and smartphone screens.

Display devices can be point based, ray based, or interference based. Point and ray based displays can be studied using [[ray optics]]. Interference based displays must be examined using [[wave optics]]. Point based devices are based on point sources. These include laptop screens, televisions, and smartphone screens.

Ray based devices are based on rays. These include heads up displays in cars.

Ray based devices are based on rays. These include heads up displays in cars.