archimedes' spiral
121Marine chronometer — Breguet twin barrel box chronometer. Classification Clock Industry Transportation …
122screw — screwable, adj. screwer, n. screwless, adj. screwlike, adj. /skrooh/, n. 1. a metal fastener having a tapered shank with a helical thread, and topped with a slotted head, driven into wood or the like by rotating, esp. by means of a screwdriver. 2 …
123nature, philosophy of — Introduction the discipline that investigates substantive issues regarding the actual features of nature as a reality. The discussion here is divided into two parts: the philosophy of physics and the philosophy of biology. In this… …
124worm — I. noun Usage: often attributive Etymology: Middle English, from Old English wyrm serpent, worm; akin to Old High German wurm serpent, worm, Latin vermis worm Date: before 12th century 1. a. earthworm; broadly an annelid worm b. any of numerous… …
125Optical illusion — This article is about visual perception. For the Time Requiem album, see Optical Illusion (album). An optical illusion. The square A is exactly the same shade of gray as square B. See checker shadow illusion. An optical illusion (also called a… …
126List of geometric shapes — This is a list of geometric shapes.Generally composed of straight line segments* polygon ** concave polygon ** constructible polygon ** convex polygon ** cyclic polygon ** decagon ** digon ** dodecagon ** nonagon ** equiangular polygon **… …
127Clifford A. Pickover — Nationality United States of America Fields …
128Screw (disambiguation) — The term screw may refer to:* Screw (simple machine) ** Archimedes screw a simple machine for transporting water to a higher elevation * Screw threaded fastener related articles **Screw threaded fastener with external threads ** Leadscrew used to …
