maximum density
51Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
52inland water ecosystem — ▪ biology Introduction complex of living organisms in free water on continental landmasses. Inland waters represent parts of the biosphere within which marked biological diversity, complex biogeochemical pathways, and an array of… …
53Photographic film — This article is mainly concerned with still photography film. For motion picture film, please see film stock. Photographic film is a sheet of plastic (polyester, nitrocellulose or cellulose acetate) coated with an emulsion containing light… …
54Squantz Pond State Park — Infobox lake lake name = Squantz Pond image lake = Squantz.jpg caption lake = from space (NASA photo) image bathymetry = caption bathymetry = location = Western Connecticut coords = coord|41.51056|N|73.47056|W|region:US CT… …
55Litre — One litre is equivalent to this cube Each side is 10 cm 1 litre water = 1 kilogram water (at 4 °C) The litre (or liter  see spelling differences) is a unit of volume equal to 1 cubic decimetre (dm3), to 1,000 cubic centimetres… …
56Magneto-optical trap — experimental setup of the MOT A magneto optical trap (abbreviated MOT) is a device that uses both laser cooling with magneto optical trapping in order to produce samples of cold, trapped, neutral atoms at temperatures as low as several… …
57Airy disk — Computer generated image of an Airy disk. The gray scale intensities have been adjusted to enhance the brightness of the outer rings of the Airy pattern …
58Water — This article is about general aspects of water. For a detailed discussion of its properties, see Properties of water. For other uses, see Water (disambiguation) …
59Ceiling (aeronautics) — In aeronautics, a ceiling is the maximum density altitude an aircraft can reach under a set of conditions.ervice ceilingThe service ceiling attempts to capture the maximum usable altitude of an aircraft. Specifically, it is the density altitude… …
60dam — dam1 /dam/, n., v., dammed, damming. n. 1. a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam. v.t. 4. to furnish with a …
