ultra- low temperature
21Dilution refrigerator — Gas control system for a helium dilution refrigerator A dilution refrigerator is a cryogenic device first proposed by Heinz London. Its refrigeration process uses a mixture of two isotopes of helium: helium 3 and helium 4. When cooled below… …
22Bolometer — A bolometer is a device for measuring the energy of incident electromagnetic radiation. It was invented in 1878 by the American astronomer Samuel Pierpont Langley.It consists of an absorber connected to a heat sink (area of constant temperature)… …
23Beryllium copper — (BeCu), also known as copper beryllium, beryllium bronze and spring copper, is a copper alloy with 0.5 3% beryllium and sometimes with other alloying elements. Beryllium copper combines high strength with non magnetic and non sparking qualities.… …
24Destoroyah — Toho character Destoroyah Species Mutant precambrian aggregate crustaceans Aliases Destroyer Form(s) Micro form Juvenile form Aggregate form Flying form Final form Length Micro form 3–300 mm Juvenile form 2–18 metres Aggregate form 40–60… …
25QQVGA — Quarter QVGA (QQVGA or qqVGA) denotes a resolution of 160×120 or 120×160 pixels, usually used in displays of handheld devices. The term Quarter QVGA signifies a resolution of one fourth the number of pixels in a QVGA display (half the number of… …
26More Than a Feeling — Single by Boston from the album Boston B side …
27ULT — abbr. Ultra Low Temperature …
28Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …
29Brown dwarf — Brown dwarfs are sub stellar objects which are too low in mass to sustain hydrogen 1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no… …
30Properties of water — H2O and HOH redirect here. For other uses, see H2O (disambiguation) and HOH (disambiguation). This article is about the physical and chemical properties of pure water. For general discussion and its distribution and importance in life, see Water …
