collector grid
31electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
32Stardust (spacecraft) — Infobox Spacecraft Name = Stardust Caption = Artist s conception of the Stardust spacecraft Organization = NASA Jet Propulsion Laboratory Major Contractors = Lockheed Martin Mission Type = Fly by, sample collection Satellite Of = Sun Orbital… …
33Differential amplifier — symbol The inverting and non inverting inputs are distinguished by − and + symbols (respectively) placed in the amplifier triangle. Vs+ and Vs− are the power supply voltages; they are often omitted from the diagram for simplicity, but of course… …
34Electrical substation — An electrical substation is a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers. Electric power may flow through several… …
35Solar thermal energy — Solar thermal system for water heating in Santorini, Greece …
36Photovoltaics — (PV) is the field of technology and research related to the application of solar cells for energy by converting sunlight directly into electricity. Due to the growing need for solar energy, the manufacture of solar cells and photovoltaic arrays… …
37Concentrated photovoltaics — Concentrated photovoltaic (CPV) technology uses optics such as lenses to concentrate a large amount of sunlight onto a small area of solar photovoltaic materials to generate electricity. Unlike traditional, more conventional flat panel systems,… …
38Sustainable energy — Renewable energy …
39Ghostbusters (franchise) — Logo used by the Ghostbusters in the film Ghostbusters is a supernatural comedy multi media franchise created in 1984. Its inception was for the movie Ghostbusters, released on June 8, 1984 by Columbia Pictures. It centered around a group of… …
40Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… …
