By The Encyclopaedia Britannica, Inc.
Links for John Tyndall (1820-1893):
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https://www.britannica.com/biography/John-Tyndall
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By Encyclopedia.com, providing reference entries from credible, published sources like Oxford University Press and Columbia Encyclopedia.
http://www.encyclopedia.com/people/science-and-technology/physics-biographies/john-tyndall -
By The Earth Observatory, NASA Goddard Space Flight Center, Greenbelt, Maryland, U.S.A..
https://earthobservatory.nasa.gov/features/Tyndall -
By Molecular Expressions, National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, U.S.A..
https://micro.magnet.fsu.edu/optics/timeline/people/tyndall.html -
By The Royal Institution of Great Britain.
https://www.rigb.org/our-history/people/t/john-tyndall -
By The Victorian Web.
http://www.victorianweb.org/science/tyndall.htm -
By Wikipedia, the free encyclopedia.
https://en.wikipedia.org/wiki/John_Tyndall -
By York University, Ontario, Canada.
http://www.yorku.ca/tyndall/biography.html
