trap density
51Fusor — The Farnsworth–Hirsch Fusor, or simply fusor, is an apparatus designed by Philo T. Farnsworth to create nuclear fusion. It has also been developed in various incarnations by researchers including Elmore, Tuck, and Watson, and more lately by… …
52Phase-change memory — Computer memory types Volatile RAM DRAM (e.g., DDR SDRAM) SRAM In development T RAM Z RAM TTRAM Historical Delay line memory Selectron tube Williams tube Non volatile …
53Ponderomotive force — In physics, a ponderomotive force is a nonlinear force that a charged particle experiences in an inhomogeneous oscillating electromagnetic field. The ponderomotive force Fp is expressed by where e is the electrical charge of the particle, m is… …
54Species distribution — A species range maps represents the geographical region where individuals of a species can be found. This is a range map of Juniperus communis, the common juniper. Species distribution is the manner in which a biological taxon is spatially… …
55Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …
56Pheromone — Fanning honeybee exposes Nasonov gland (white at tip of abdomen) releasing pheromone to entice swarm into an empty hive A pheromone (from Greek φ …
57Stringtown, Oklahoma — Infobox Settlement official name = Stringtown, Oklahoma settlement type = Town nickname = motto = imagesize = 250px image caption = A view of the town in 1978 looking towards the old post office. image mapsize = 250px map caption = Location of… …
58Rhinoplasty — For the album by Primus, see Rhinoplasty (album). Rhinoplasty Intervention Rhinoplasty: The lower lateral cartilage (greater alar cartilage) exposed for plastic modification via the left nostril …
59petroleum — petroleous, adj. /peuh troh lee euhm/, n. an oily, thick, flammable, usually dark colored liquid that is a form of bitumen or a mixture of various hydrocarbons, occurring naturally in various parts of the world and commonly obtained by drilling:… …
60Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 …
