Anders Jonas Ångström

Anders Jonas Ångström was a prominent Swedish physicist and astronomer who is recognized as a foundational figure in the field of optical spectroscopy. In the 1860s, he successfully identified the presence of hydrogen in the Sun's spectrum. He was one of the first scientists to study the specific wavelengths of light emitted by different elements.

Yes, the angstrom (Å), a unit of length equal to one ten-billionth of a meter, was named in his honor in 1905. It is widely used in atomic physics and chemistry to measure microscopic distances. It is the perfect scale for measuring the wavelengths of light and the sizes of atoms.

Yes, in 1868, Ångström published a massive, highly detailed atlas of the solar spectrum. This work contained precise measurements of around 1,000 different Fraunhofer lines. His atlas established the standard for spectroscopic research and was used by scientists for decades.

Ångström spent his entire academic career at Uppsala University in Sweden. He began as a student there and eventually became a professor of physics at the institution. He conducted his groundbreaking spectroscopic research using the university's observatory and laboratories.