How was Albert Abraham Michelson awarded the Nobel Prize?

Name: Albert Abraham Michelson. 
Country: German Empire, United States.
Date of Birth: 19 December 1852.
Died: 9 May 1931.
The subject of Study: Michelson–Morley experiment, spectroscopy speed of light, Michelson interferometer.
Noble Prize Year: Nobel Prize for Physics in 1907 for their research on the optical precision instruments and the spectroscopic and metrological investigations carried out with their aid”.