How was William Francis Giauque awarded the Noble Prize?

Name: William Francis Giauque
Country: Canada
Date of Bitrh: May 12, 1895
Date of Death: March 28, 1982
Subject of Study: Low-Temperature Phenomenon
Noble Prize Year: Nobel Prize for Chemistry in 1949 for his studies of the properties of matter at temperatures close to absolute zero.
About: William Francis Giauque After his Ph.D. from the University of California, Berkeley, in 1922, Giauque joined the chemistry faculty there and held posts at the school until 1981. In 1927, he proposed a new method of achieving extremely low temperatures using a process called adiabatic demagnetization. By 1933, he had a working apparatus that obtained a temperature within one-tenth of a degree of absolute zero (-273.15 ° C). His research confirmed the third law of thermodynamics, which states that the entropy of ordered solids reaches zero at the absolute zero of temperature. In the course of his low-temperature studies of oxygen, Giauque discovered with Herrick L. Johnston the oxygen isotopes of mass 17 and 18.