molecules collide
121Europa (moon) — Europa Europa s trailing hemisphere in approximate natural color. The prominent crater in the lower right is Pwyll and the darker regions are areas where Europa s primarily water ice surface has a higher mineral content. Imaged on September 7,… …
122Arrhenius equation — The Arrhenius equation is a simple, but remarkably accurate, formula for the temperature dependence of the rate constant, and therefore, rate of a chemical reaction. [http://www.iupac.org/goldbook/A00446.pdf Arrhenius equation] IUPAC Goldbook… …
123DESY — Sign at the entrance of DESY in Hamburg. The DESY (Deutsches Elektronen Synchrotron, German Electron Synchrotron ) is the biggest German research center for particle physics, with sites in Hamburg and Zeuthen. DESY s main purposes are fundamental …
124Exosphere — Earth atmosphere diagram showing the exosphere and other layers. The layers are to scale. From Earth s surface to the top of the stratosphere (50km) is just under 1% of Earth s radius. The exosphere is the uppermost layer of Earth s atmosphere.… …
125Nuclear technology — A residential smoke detector is the most familiar piece of nuclear technology for some people Nuclear technology is technology that involves the reactions of atomic nuclei. Among the notable nuclear technologies are nuclear power, nuclear… …
126Polaroid — For the Polaroid instant camera, see instant camera. For the company, see Polaroid Corporation. For the Phantom Planet album, see Polaroid (Phantom Planet) Polaroid is the name of a type of synthetic plastic sheet which is used to polarize… …
127Atomic force microscope — The atomic force microscope (AFM) or scanning force microscope (SFM) is a very high resolution type of scanning probe microscope, with demonstrated resolution of fractions of a nanometer, more than 1000 times better than the optical diffraction… …
128Le Sage's theory of gravitation — is the most common name for the kinetic theory of gravity originally proposed by Nicolas Fatio de Duillier in 1690 and later by Georges Louis Le Sage in 1748. The theory proposed a mechanical explanation for Newton s gravitational force in terms… …
