Author:
John Tyndall (1820-1893), Anglo-Irish physicist, celebrated for his work on diamagnetism and infrared radiation, who discovered the Greenhouse Effect in 1859 [Global warming]
Photo, 5.5 x 9cms, good condition. According to AI: [The] image shows a portrait of John Tyndall, a prominent 19th-century Irish physicist and mountaineer, taken around 1872 by the photography studio Elliott & Fry. But it hasn't the card backup and printed description and ascription of the Elliott & Fry issue. And has nothing to indicate that it ever had that feature.
