Complex sentence: According to Arnold Sommerfeld, Ralph H. Fowler invented the title'the zeroth law of thermodynamics' when he was discussing the 1935 text of Saha and Srivastava, who on the first page assert that "every physical quantity must be measurable in numerical terms".
Split into simpler sentences: According to Arnold Sommerfeld, Ralph H. Fowler invented the title'the zeroth law of thermodynamics' when he was discussing the 1935 text of Saha and Srivastava. They write on page 1 that "every physical quantity must be measurable in numerical terms".