Prandtl numbers are named after a pioneer in what applied science?
Prandtl number The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity. That is, the Prandtl number is given as:
Herbert Gross Herbert Gross (born 2 April 1929) is an American Professor of mathematics (retired) and former senior lecturer at MIT’s Center for Advanced Engineering Study (CAES). He is best known as a pioneer in using distance learning for teaching mathematics.