Science & technology

John Tyndall measures how gases trap heat

1859

In 1859 the Irish physicist John Tyndall, working at the Royal Institution in London, built a device to measure how different gases absorb infrared radiation. He found that water vapour and carbon dioxide absorb heat strongly, while the main gases of the air, oxygen and nitrogen, are almost transparent to it. This showed experimentally how small amounts of some gases can warm a planet, which had been suggested by Joseph Fourier in the 1820s. Svante Arrhenius calculated in 1896 that doubling carbon dioxide would raise the global temperature by several degrees.

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This moment belongs to the Industrial era (1760 CE to 1914 CE), steam, factories and revolutions. You can also browse everything in the 19th century.