Percy Spencer November 18, 1960. Raytheon Integrated Defense Systems, which deals extensively in radar systems, has named a building after Spencer in the Woburn, Massachusetts facility. An early Radarange model sits in the lobby, across from the dining center. Percy Spencer Percy Lebaron Spencer (July 19, 1894 – September 8, 1970) was an American physicist and inventor. He became known as the inventor of the microwave oven. Spencer was born in Howland, Maine. Eighteen months later, Spencer's father died, and his mother soon left him in the care of his aunt and uncle. His uncle then died when Spencer was just seven
GADGET in a new time integration model, a new tree-code module, a new communication scheme for gravitational and SPH forces, a new domain decomposition strategy, a novel SPH formulation based on entropy as independent variable, and finally, in the addition of the TreePM functionality. GADGET GADGET is a free software for cosmological N-body/SPH simulations written by Volker Springel at the Max Planck Institute for Astrophysics. The name is an acronym of "GAlaxies with Dark matter and Gas intEracT". It is released under the GNU GPL. GADGET computes gravitational forces with a hierarchical tree algorithm (optionally in combination with a particle-mesh scheme