
Candles On A Cake

by Science Photo Library
Title
Candles On A Cake
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Candles on a cake, Schlieren image. The candle flames (white, lower centre) are heating air that is seen coiling (yellow, green and red) as it rises. Schlieren photography is used to visualize density changes in transparent materials. This change in density causes light passing through a material to change direction (refraction). This property is measured by the refractive index of a material. A filter is then used to colour the light depending upon the amount it is deflected by the density change. Hot air is less dense than the surrounding air, which is also why it rises.
Uploaded
October 4th, 2018
Embed
Share
Similar Subjects
Comments
There are no comments for Candles On A Cake. Click here to post the first comment.