hold moving object
21Chuck (engineering) — Self centering three jaw chuck and key with one jaw removed and inverted showing the teeth that engage in the scroll plate. The scroll plate is rotated within the chuck body by the key, the scroll engages the teeth on the underside of the jaws… …
22Vision in toads — The neural basis of prey detection, recognition, and orientation was studied in depth by Jörg Peter Ewert in a series of experiments that made the toad visual system a model system in neuroethology (neural basis of natural behavior). He began by… …
23Aristotelian physics — The Greek philosopher Aristotle (384 BC – 322 BC) developed many theories on the nature of physics that are completely different from what are now understood as the laws of physics. These involved what Aristotle described as the four elements, as …
24Animal colouration — has been a topic of interest and research in biology for well over a century. Colours may be cryptic (functioning as an adaptation allowing the prevention of prey detection; aposematic (functioning as a warning of unprofitability) or may be the… …
25pottery — /pot euh ree/, n., pl. potteries. 1. ceramic ware, esp. earthenware and stoneware. 2. the art or business of a potter; ceramics. 3. a place where earthen pots or vessels are made. [1475 85; POTTER1 + Y3] * * * I One of the oldest and most… …
26Theory of impetus — The theory of impetus was an antiquated auxiliary or secondary theory of Aristotelian dynamics, put forth initially to explain projectile motion against gravity. It was first introduced by Hipparchus in antiquity, and subsequently further… …
27Kite mooring — Kites are given mooring by many methods. Watercraft and aircraft traditionally have the term mooring applied to making the watercraft or aircraft fast to some external object. The kite has two parts: wing and kite line; the kite essentially needs …
28Pluto — This article is about the dwarf planet. For other uses, see Pluto (disambiguation). Pluto   …
29Glossary of conjuring terms — This is a Glossary of conjuring terms used by magicians.AlphanumericTOC align=center numbers= seealso=|A*Angles the lines of vision of people sitting at certain position in the audience which enable a secret to be spotted* usually extreme left or …
30Cortical visual impairment — (CVI) is a form of visual impairment that is caused by a brain problem rather than an eye problem. (The latter is sometimes termed ocular visual impairment when discussed in contrast to cortical visual impairment.) Some people have both CVI and a …
