initial temperature
51Calorie — The amount of heat required to raise the temperature of a unit of water, at or near the temperature of maximum density, one degree Celsius (or Centigrade); expressed as a small calorie (the amount of heat required to raise the temperature of 1… …
52Stefan problem — In mathematics and its applications, particularly to phase transitions in matter, a Stefan problem (also Stefan task) is a particular kind of boundary value problem for a partial differential equation (PDE), adapted to the case in which a phase… …
53Ammonium perchlorate composite propellant — (APCP) is a modern solid rocket propellant used in both manned and unmanned rocket vehicles. It differs from many traditional solid rocket propellants such as black powder or Zinc Sulfur, not only in chemical composition and overall performance,… …
54Tiffeneau-Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) the chemical reaction of 1 aminomethyl cycloalkanols with nitrous acid to form an enlarged cycloketone.Ref|Tiffeneau1937After being in existence for over 65 years, the reaction is popular among organic… …
55Tiffeneau–Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) is the chemical reaction of a 1 aminomethyl cycloalkanol with nitrous acid to form an enlarged cycloketone. The Tiffeneau–Demjanov ring expansion, Tiffeneau–Demjanov rearrangement, or TDR, provides an… …
56Thunder — For other uses, see Thunder (disambiguation). Thunder is the sound made by lightning. Depending on the nature of the lightning and distance of the listener, thunder can range from a sharp, loud crack to a long, low rumble (brontide). The sudden… …
57British thermal unit — Physics. the amount of heat required to raise the temperature of 1 lb. (0.4 kg) of water 1°F. Abbr.: Btu, BTU, B.t.u., B.T.U., B.th.u. [1875 80] * * * ▪ unit of measurement a measure of the quantity of heat, defined since 1956 as… …
58Btu per cubic foot — The total heating value, expressed in Btu, produced by the combustion, at constant pressure, of the amount of the gas that would occupy a volume of 1 cubic foot at a temperature of 60 degrees F if saturated with water vapor and under a pressure …
59Bora (wind) — the North Wind. Feature The changeable Bora can often be felt all over Dalmatia and the rest of the Adriatic east coast. It blows in gusts. The Bora is most common during the winter. It blows hardest, as the meteorologist Baron Ferdinand von… …
60Milky Way — This article is about the galaxy. For other uses, see Milky Way (disambiguation). Milky Way galaxy Image of the Milky Way s Galactic Center in the night sky above Paranal Observatory Observation data …
