Anders Jonas Ångström was a pioneer in the field of spectroscopy , and is also known for his studies of astrophysics , heat transfer , terrestrial magnetism , and the aurora borealis .
The ångström is named after the Swedish physicist Anders Jonas Ångström ( 1814 -- 1874 ) , one of the founders of spectroscopy who is known also for studies of astrophysics , heat transfer , terrestrial magnetism , and the aurora borealis .