When a hot gas which is emitting or absorbing spectrum lines is placed in a magnetic field, the lines become split into several components. This is known as the Zeeman effect, discovered in 1896 by th...When a hot gas which is emitting or absorbing spectrum lines is placed in a magnetic field, the lines become split into several components. This is known as the Zeeman effect, discovered in 1896 by the Dutch spectroscopist P. Zeeman.
