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What were Anders Angstrom's contributions to the development of spectroscopy?

Find out what a Swedish physicist contributed to the spectroscopy field.

Spectrum analysis allows scientist to measure light waves. [©Shutterstock, 2010]
©Shutterstock, 2010
Spectrum analysis allows scientist to measure light waves.

Swedish physicist and astronomer, Anders Jonas Angstrom (1814-1874), was one of the founders of spectroscopy. His early work provided the foundation for spectrum analysis (analysis of the ranges of electromagnetic radiation emitted or absorbed). He investigated the sun spectra as well as that of the Aurora Borealis. In 1868, he established measurements for wavelengths of greater than 100 Frauenhofer. In 1907, the angstrom (Å, equal to 10-10m), a unit of wavelength measurement, was officially adopted.

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