off-bottom spacing
41Underwater searches — are procedures carried out by divers in order to find a known or suspected target object or objects in a specified search area under water. There are a number of techniques in general use by Commercial, Scientific, Public service, Military, and… …
42Hyperspace (science fiction) — Hyperspace is a fictional plot device sometimes used in science fiction. It is typically described as an alternate region of subspace co existing with our own universe which may be entered using an energy field or other device. Travel in… …
43AC power plugs and sockets — See also: Industrial and multiphase power plugs and sockets Plugs and sockets may sometimes combine male and female contacts, but t …
44Friden Flexowriter — The Friden Flexowriter, or flexowriter as on its nameplate, was a teleprinter, a heavy duty electric typewriter capable of being driven not only by a human typing, but also automatically by several methods including direct attachment to a… …
45Scanning tunneling spectroscopy — (STS) is a powerful experimental technique in scanning tunneling microscopy (STM) that uses a scanning tunneling microscope (STM) to probe the local density of electronic states (LDOS) and band gap of surfaces and materials on surfaces at the… …
46Dune (novel) — Dune   First e …
47Crankset — A Shimano Deore right crankset, showing crank arm, spider, three chainrings and chainring guard …
48navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …
49Marine geology of the Cape Peninsula and False Bay — Contents 1 Introduction 2 The geological structure of the region 2.1 Malmesbury group deposition 2.1.1 Appearance of the exposed Malmesbury group rocks …
50Holography — (from the Greek, ὅλος hólos whole + γραφή grafē writing, drawing) is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the… …
