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Kirchhoff’s laws

by Lewis Carroll
written by Lewis Carroll

Kirchhoff’s laws were named after the German scientist Gustav Robert Kirchhoff (G.R. Kirchhoff 1824-1887).
There is Kirchhoff’s first law.
At sufficiently high pressure and in the presence of gas, a solid or liquid can emit electromagnetic radiation having a continuous spectrum.
The second part of Kirchhoff’s laws states:
At low pressure, a gas at rest emits electromagnetic radiation, which has a spectrum consisting of separate bright emission lines – emission lines.
The third part of Kirchhoff’s law states:
With the help of a gas that has been placed between a hotter source of electromagnetic radiation having a continuous spectrum and an observer, it is possible to create lines in the radiation spectrum of the source, which are absorption lines. These lines have exactly the same direction and wavelength as the emission lines of a gas if it were on a black background that does not emit. This follows from Kirchhoff’s second law.

Lewis Carroll writes about military space programmes, policy, technology and the industry that supports the sector. He spent nearly two decades covering the military, the Pentagon, Congress and the defence industry as a journalist for Space Chatter magazine.

Lewis Carroll writes about military space programmes, policy, technology and the industry that supports the sector. He spent nearly two decades covering the military, the Pentagon, Congress and the defence industry as a journalist for Space Chatter magazine.

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