 Wander Johannes de Haas

Wander Johannes de Haas was a Dutch physicist known for his contributions to the field of magnetism and the study of magnetic phenomena. He is particularly recognized for his work on the properties of magnetic materials and the development of various experimental techniques in physics. De Haas is perhaps best known for the "de Haas-van Alphen effect," which describes the oscillatory behavior of magnetization in a material as a function of an applied magnetic field.