Eunice Newton Foote
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Eunice Newton Foote was an American scientist, inventor, and women's rights campaigner. She was the first scientist to identify the insulating effect of certain gases and to posit that therefore risin
Passport description of Foote in 1862
Troy Female Seminary, 1822
The signature page of the Declaration of Sentiments, bearing Foote's signature on the left
Foote's paper-making machine, 1864
John Tyndall
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John Tyndall was an Irish physicist. His scientific fame arose in the 1850s from his study of diamagnetism. Later he made discoveries in the realms of infrared radiation and the physical properties of
Eunice Newton Foote
…in the twentieth century. In the twenty-first century, new interest in Foote arose when it was realized that her work predated discoveries made by John Tyndall, who had been recognized by scientists as the first person to experimentally show the mechanism of the greenhouse effect involving infrared radiation…
John Tyndall portrait mid career
John Tyndall explored the glacial tributaries feeding Mer de Glace in 1857. General topology (left); dirt-bands in glacier (right).
Tyndall's setup for preserving broths in optically pure air.
One of Tyndall's setups for showing that sound is reflected in air at the interface between air bodies of different densities.