births
March 4, 1862
Jacob Robert Emden, Swiss astrophysicist and meteorologist (died 1940)
Robert Emden
Jacob Robert Emden was a Swiss astrophysicist and meteorologist. He is best known for his book, Gaskugeln: Anwendungen der mechanischen Wärmetheorie auf kosmologische und meteorologische probleme, published in 1907. It presents a mathematical model of the behaviour of polytropic gaseous stellar objects under the influence of their own gravity, known as the Lane–Emden equation.