Speed of Darkness

Posted by Adrian

Jun
18
2011

It has been known for a long time how fast light travels. But what about the speed of darkness? Darkness moves in a different way to light, thus travels at a different speed. But is it faster or slower than light? Or does it depend on the circumstances. Let us take a simple example, the everyday event of turning on and off a light switch. When turning off the light the room becomes instantly dark. Thus the darkness must be at least as fast as the light to fill up the space. Now turn the light back on. The light … Read on →