Anders Jonas %C3%85ngstr%C3%B6m
Anders Jonas Ångström was a Swedish physicist and one of the founders of the science of spectroscopy. Ångström is also well known for his studies of astrophysics, heat transfer, terrestrial magnetism, and the aurora borealis. In 1852, Ångström formulated in Optiska undersökningar, a law of absorption, later modified somewhat and known as Kirchhoff's law of thermal radiation.
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