Knut Johan Ångström

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Ångström, Knut Johan


Born Jan. 12, 1857, in Uppsala; died Mar. 4, 1910, in Uppsala. Swedish geophysicist, member of the Stockholm Academy of Sciences (1893). Son of A. J. Ångström.

Ångström became a professor at Uppsala University in 1896. He studied the absorption of infrared rays by various substances and constructed a compensating pyrheliometer (for measuring the sun’s energy as received on earth) and a pyrgeometer (for determining the earth’s radiation).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.