to vacuum a room
71Cryostat — NASA s WISE infrared instrument is kept cold by a cryostat. The cryostat can be seen at the top of the spacecraft. A cryostat (from cryo meaning cold and stat meaning stationary) is a device used to maintain cold cryogenic temperatures. Low… …
72Italy — /it l ee/, n. a republic in S Europe, comprising a peninsula S of the Alps, and Sicily, Sardinia, Elba, and other smaller islands: a kingdom 1870 1946. 57,534,088; 116,294 sq. mi. (301,200 sq. km). Cap.: Rome. Italian, Italia. * * * Italy… …
73Cryogenic seal — Cryogenic seals provide a mechanical containment mechanism for materials held at cryogenic temperatures, such as cryogenic fluids. Various techniques, including soldering and welding are available for creating seals, however specialized materials …
74Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …
75electricity — /i lek tris i tee, ee lek /, n. 1. See electric charge. 2. See electric current. 3. the science dealing with electric charges and currents. 4. a state or feeling of excitement, anticipation, tension, etc. [1640 50; ELECTRIC + ITY] * * *… …
76aerospace industry — Introduction assemblage of manufacturing concerns that deal with vehicular flight within and beyond the Earth s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the …
77Package testing — Military shipping container being drop tested Testing …
78Protactinium — thorium ← protactinium → uranium Pr ↑ Pa ↓ …
79Captain Beefheart — Don Van Vliet At Convocation Hall, Toronto, in 1974 Background information Birth name Don Glen Vliet Also known as …
80DIY audio — An example of DIY audio: a functioning battery operated DAC (Digital to analog converter) before installation in a box case DIY Audio means do it yourself audio. Rather than buying a piece of possibly expensive audio equipment, such as a high end …
