reversed-frequency operation
51Nikola Tesla — Tesla, aged 37, 1893, photo by Sar …
52Harry Turtledove's Darkness — The Darkness Series is a series of six fantasy novels by Harry Turtledove.* Into the Darkness (1999) * Darkness Descending (2000) * Through the Darkness (2001) * Rulers of the Darkness (2002) * Jaws of the Darkness (2003) * Out of the Darkness… …
53steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …
54harbours and sea works — Introduction harbour also spelled harbor any part of a body of water and the manmade structures surrounding it that sufficiently shelters a vessel from wind, waves, and currents, enabling safe anchorage or the discharge and loading of… …
55Natural selection — For other uses, see Natural Selection (disambiguation). Part of a series on Evolutionary Biology …
56Amelia Earhart — Earhart redirects here. For the asteroid, see 3895 Earhart. Amelia Earhart Amelia Earhart …
57Cooley-Tukey FFT algorithm — The Cooley Tukey algorithm, named after J.W. Cooley and John Tukey, is the most common fast Fourier transform (FFT) algorithm. It re expresses the discrete Fourier transform (DFT) of an arbitrary composite size N = N 1 N 2 in terms of smaller… …
58Diabetes management — Main article: Diabetes mellitus Diabetes is a chronic disease with no cure as of 2010[update] but a lot of research is underway. It is associated with an impaired glucose cycle, altering metabolism. Management of this disease may include… …
59drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …
60Drug — /droog/, n. Zoroastrianism. the cosmic principle of disorder and falsehood. Cf. Asha. [ < Avestan drauga] * * * I Any chemical agent that affects the function of living things. Some, including antibiotics, stimulants, tranquilizers,… …
