balance point temperature
31Pocket watch — This article is about the portable timepiece. For the Dave Grohl album, see Pocketwatch (album). A gold pocket watch with hunter case and watch chain …
32Trace heating — Electric Trace Heating, also known as Electric Heat Tracing and Electric Surface Heating, is a system used to maintain or raise the temperature of pipes and vessels. Trace heating takes the form of a electrical like heating element run in… …
33Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …
34Moisture analysis — covers a variety of methods for measuring moisture content in both high level and trace amounts in solids, liquids, or gases. Moisture in percentage amounts is monitored as a specification in commercial food production. There are many… …
35Underfloor heating — Heat can be provided by circulating heated water or by electric cable, mesh, or film heaters.Underfloor heating can be used with concrete and wooden floors, with all types of floor covering (e.g., stone, tile, wood, vinyl, and carpet), and at… …
36Heating degree day — United States Heating Degree Day map, 1961 1990 …
37Penitentes — For the Argentine ski resort, see Los Penitentes. For the New Mexico confraternity, please see Penitentes (New Mexico). Or see penitent. Field of Penitentes (1.5 2m high); upper Rio Blanco, Central Andes of Argentina …
38Wilkinson Microwave Anisotropy Probe (WMAP) — ▪ United States satellite a U.S. satellite launched in 2001 and designed to map irregularities in the cosmic microwave background (CMB). The CMB was discovered in 1964 when German American physicist Arno Penzias (Penzias, Arno) and… …
39Planck — /plahngk/, n. Max Karl Ernst /mahks kahrddl erddnst/, 1858 1947, German physicist: Nobel prize 1918. * * * ▪ European Space Agency satellite a European Space Agency satellite, to be launched in 2009, designed to measure the cosmic microwave …
40MESSENGER — This article is about the NASA space mission. For other uses, see Messenger. MESSENGER Artist s rendering of MESSENGER orbiting Mercury. Operator NASA / APL Major contractors APL …
