Governance by those who do the work.

Wednesday, November 30, 2011

The Colors of Heat

Hot objects can glow visibly. Heat Colors for Blacksmiths shows images of mild steel at various temperatures.

At a given temperature, a blackbody will emit more light than any other surface. The table below shows the colors of a blackbody at exponentially decreasing absolute temperate. The left column of colors is how they would naturally appear. The top color is a sky blue, which has a color temperature of approximately 10000 K.

In the right column, each temperature's chromaticity is scaled proportionally to its Celsius temperature.