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John's Back ground https://www.youtube.com/watch?v=53tFu9unKhQ
John Tyndall, (born August 2, 1820, Leighlinbridge, County Carlow, Ireland—died December 4, 1893, Hindhead, Surrey, England), Irish experimental physicist who, during his long residence in England, was an avid promoter of science in the Victorian era. -
Tyndall's Earliest Experiment REFERENCE:
Tyndall showed that gases including carbon dioxide and water vapour can absorb heat. His heat source was not the Sun, but radiation from a copper cube containing boiling water. In modern terms, this was infrared radiation just like that emanating from the Earth’s surface.He realized that any change in the amount of water vapour or carbon dioxide in the atmosphere could change the climate. His work therefore set a foundation for our understanding of climate change and meteorology. -
The Tyndall Effect. REFERENCE :https://www.britannica.com/science/wave-physics
n 1859, John Tyndall, through experimentation, was able to help us understand why the sky is blue. When light passes through clear liquid holding small particles of dust or debris, the blue light is scattered much more strongly than the red light. This was one of the first steps in explaining why our sky might be blue and this case was eventually settled by Albert Einstien in 1911. -
Tyndall Chamber. REFERENCE:
Tyndall conducted experiments in a designed box called Tyndall chamber he proved that dust has germs.He showed that dust did carry microbes,and if dust was absent the sterile broth will remain sterile.This work developed a process called Tyndallization which is used for the complete sterilization food by alternate heating/cooling.He observed that boiling the infusion for over 5hrs was not sufficient enough to sterilize it,and concluded that bacteria has both thermostable and thermolabile phases. -
Spontaneous Generation REFERENCE:https://www.irishtimes.com/life-and-style/abroad/the-xcentric-carlow-physicist-who-discovered-why-the-sky-is-blue-1.3375069
John Tyndall came to the defense of a scientist by the name of Louis Pasteur 91870-1876) in his experiment disproving that living creatures could come to life from non-living matter and that the process was commonplace. Tyndall further experimented on this issue and ironed out some of the irregularities that arose from Pasteur's earlier experiments. Thanks to these discoveries, this lead Tyndall and other scientists in the 19th century to a new theory called "Biogenesis".