On August 13th 1814 Anders Angstrom (1814-1874) was born in Sweden. An astronomer and physicist, he pioneered the study of spectroscopy. The unit the angstrom which is used to measure wavelengths of light is named after him.
His studies of the solar spectrum led to the discovery in 1862 that hydrogen is present in the Sun’s atmosphere. He was also the first in 1867 to examine the spectrum of the Aurora Borealis or Northern Lights.
www.theramblingastronomer.co.uk
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