Schlieren Video: Lighting a Candle
Schlieren imaging is a technique that visualizes areas where the density of air is changing. These regions of changing air density are outlined with intense colors (Red on the left, Yellow on the top, Green on the right, and Blue on the bottom).
In this video, we strike a kitchen match on a matchbox (the box is held over the match) and light a candle. As the match is struck, it starts to burn, heating the air which causes the colors you see. Shortly after that, the yellow flame becomes visible.
The Edgerton Center turns 20
Professor J. Kim Vandiver on the history and future of the Edgerton Center.