Swedish Physicist and Astronomer
Angstrom was born in Logdo, Sweden in 1814.
He studied and taught in the University of Uppasala. He obtained his doctorate
(1839) and became Professor of Physics in 1858 at the University and he stayed
there until his death in 1874.
His most important work was 'Optical Investigations' (1853) in which he published measurements on atomic spectra,
particularly on electric spark.
Having established the principles of
spectroscopy in the laboratory, Angstrom turned his attention to the Sun's
spectrum, he published in 1968, 'Researches on the Solar Spectrum'. In this, he
made the inference that hydrogen was present in Sun. Since 1905 his name has
been officially honoured as a unit of length used by spectroscopists and microscopists.
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