argon electric propulsion
41Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… …
42Nuclear reactor technology — This article is a subarticle of Nuclear power .A nuclear reactor is a device in which nuclear chain reactions are initiated, controlled, and sustained at a steady rate, as opposed to a nuclear bomb, in which the chain reaction occurs in a… …
43Organic light-emitting diode — Demonstration of a flexible OLED device A green emitting OLED device An …
44Electrothermal instability — NOTOC The electrothermal instability (also known as the ionization instability or Velikhov instability in the literature) is a magnetohydrodynamic (MHD) instability appearing in magnetized non thermal plasmas used in MHD converters. It was first… …
45Aérobot — Un aérobot est un type de sonde planétaire conçu pour recueillir des données en se laissant porter par l atmosphère de la planète explorée. Dès 1960, quand on a commencé à travailler sur les rover lunaires destinés à l exploration de la Lune et d …
46Instabilité électrothermique — L instabilité électrothermique dite aussi instabilité de Velikhov ou instabilité d ionisation a été prédite par la théorie par le physicien russe Evgeny Velikhov en 1962, prédiction qui fut confirmée expérimentalement dès 1965[1]. C est une… …
47hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …
48Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd …
49Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
50Aerobot — An aerobot is an aerial robot, usually used in the context of an unmanned space probeWhile work has been done since the 1960s on robot rovers to explore the Moon and other worlds in the Solar system, such machines have limitations. They tend to… …
