title: Madelung
text: # Madelung
  
  Madelung is a German surname. It is also the name of multiple terms in mathematics and science based on people named Madelung.
  
  ## People
  
  * Erwin Madelung (1881–1972), German physicist
  * Georg Hans Madelung (1889–1972), German aeronautical engineer
  * Otto Wilhelm Madelung (1846–1926), German surgeon
  * Wilferd Madelung (1930–2023), German-American author and scholar of Islamic history
  
  ## Mathematics and science
  
  * Madelung constant, chemical energy of an ion in a crystal, named after Erwin Madelung
  * Madelung equations, Erwin Madelung's equivalent alternative formulation of the Schrödinger equation
  
  ## Medicine
  
  * Madelung's deformity, characterized by malformed wrists and wrist bones, and short stature, named after Otto Wilhelm Madelung
  * Madelung's syndrome, also known as "benign symmetric lipomatosis", named after Otto Wilhelm Madelung
  