Autographed Note Signed

London, 1880. 7" x 4.5", note paper with embossed Royal Institute of Great Britain seal on header, four mounting tabs on rear corners, light fade across the center from where it was exposed during framing. <br /> <br /> John Tyndall FRS (Aug 1820 - Dec 1893) was a prominent 19th-century Irish physicist. His initial 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 air, proving the connection between atmospheric C02 and what we now know as the Greenhouse Effect in 1859. Tyndall also published more than a dozen science books which brought state-of-the-art 19th century experimental physics to a wide audience. At the time of this writing, from 1853 to 1887 he was professor of physics at the Royal Institution of Great Britain in London. "On my return from Switzerland last night I found here the volume on "Scientific Transcendentalism" by D. M. Might I ask you to send my best thans to the author?" Yours Truly John Tyndall.