GK and Amazingfacts

Tuesday 10 February 2015

Why Do Distant Lights Flicker?

WHY DO distant lights flicker?

 In a vacuum tight travel from a source to us on the straights .

 but when the light passes through the atmosphere, its trajectory is affected by

 changes in the optical properties of the intervening air .In particular,

 hot air undergoes changes in the density and the refractive index of which create

 feel the location of the light source is constant heat

 changing - an effect we preceive as ' flicker ' .


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