Stellar interiors

April 11, 1901 – December 14, 1976

From [en.wikipedia.org/wiki/Donald_Howard_Menzel](http://en.wikipedia.org/wiki/Donald_Howard_Menzel): Born in Florence, Colorado, Menzel was a very good student, especially interested in mathematics and science. He learned to read very early, learned Morse code from his father, collected ore specimen, became an amateur radio operator, built up a large home chemistry lab, was an Eagle Scout, and learned Spanish. [1] At 16 years old, Menzel enrolled at the University of Colorado to study chemistry. However, observing the solar eclipse of June 8, 1918 led him to change his course of study to astronomy. Menzel earned an internship at Princeton University, and spent summer vacations at Harv…