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Birth of John Tyndall
born August 2, 1820, Leighlinbridge, County Carlow, Ireland -
Radiant heat apparatus
Tyndall examined the transmission of both radiant heat and light through various gases and vapors. He discovered that water vapor and carbon dioxide absorb more radiant heat than the gases of the atmosphere and argued the consequent importance of those gases in moderating Earth’s climate. The greenhouse effect. https://www.youtube.com/watch?v=1thc8JDgfXo
https://www.rigb.org/our-history/iconic-objects/iconic-objects-list/tyndall-radiant-heat -
Published Heat a Mode of Motion
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Tyndall Effect
Experimented with light by shining beams through different gases and liquids. Using a glass tube to simulate the sky, with the light on the end representing the sun. He discovered that when the tube gradually filled with smoke the light appeared to be blue from one side and red on the opposite side. This made him realize the color of the sky is the result of the sun scattering around particles in the atmosphere.
Reference
https://micro.magnet.fsu.edu/optics/timeline/people/tyndall.html -
Tyndallization
Tyndallization is used for the complete sterilization of food by alternate heating and cooling. He observed that boiling the infusion for more than five hours was not sufficient enough to sterilize it, and he concluded that bacteria have both thermo-stable and thermo-labile phases, thus proving the existence of heat-resistant forms of bacteria as was also confirmed by Ferdinand Cohn. Reference
https://microbiologyclass.com/john-tyndall-1820-1893-and-ferdinand-j-cohn-1828-1898/ -
Death of John Tyndall
death December 4, 1893, Haslemere, United Kingdom