re-arrange equation
81Twin paradox — In physics, the twin paradox is a thought experiment in special relativity, in which a twin makes a journey into space in a high speed rocket and returns home to find he has aged less than his identical twin who stayed on Earth. This result… …
82Wernher von Braun — Von Braun at his desk at Marshall Space Flight Center in May 1964, with models of the Saturn rocket family Born March 23, 1912(1912 03 23) Wirsitz, German Empire …
83Nuclear thermal rocket — Sketch of nuclear thermal rocket …
84Atomic nucleus — A figurative depiction of the helium 4 atom with the electron cloud in shades of gray. In the nucleus, the two protons and two neutrons are depicted in red and blue. This depiction shows the particles as separate, whereas in an actual helium atom …
85Differential scanning calorimetry — Differential Scanning Calorimeter Acronym DSC Classification Thermal analysis Manufacturers Linseis Thermal Analysis, Mettler Tol …
86Brian Epstein — NEMS Enterprises redirects here. For the Latin American record label, see NEMS Enterprises (label). Brian Epstein Promotional photo of Epstein Born Brian Samuel Epstein 19 September 1934 …
87Richard Lindzen — Richard S. Lindzen Born 8 February 1940 (1940 02 08) (age 71) Webster, Massachusetts Fields Atmospheric physics …
88Johann Peter Gustav Lejeune Dirichlet — Gustav Lejeune Dirichlet Johann Peter Gustav Lejeune Dirichlet Born 13 Fe …
89Montessori method — The Montessori method is an educational method for children, based on theories of child development originated by Italian educator Maria Montessori (1870 1952) in the late 19th and early 20th centuries. It is applied primarily in preschool and… …
90Enjo kōsai — (援助交際?) (shortened form enkō (援交?)) means compensated dating and is a practice which originated in …
