Complex sentence: 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.
Split into simpler sentences: The ångström is named after the Swedish physicist Anders Jonas Ångström (1814--1874), one of the founders of spectroscopy. Besides astrophysics, Ångström studied heat transfer, terrestrial magnetism, and the aurora borealis.