curvature of earth
91G-force — (also G force, g load) is a measurement of an object s acceleration expressed in g s. It is proportional to the reaction force that an object experiences as a result of this acceleration or, more correctly, as a result of the net effect of this… …
92Philosophiæ Naturalis Principia Mathematica —   Title page of Principia , first edition (1687) Original title …
93surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …
94telecommunications media — Introduction equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation Every… …
95Warp drive — is a form of faster than light propulsion in the fictional universe of Star Trek, capable of propelling spacecraft or objects to many multiples of the speed of light but avoiding the problems of time dilation. It is also featured in several… …
96Tests of general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …
97building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
98Map — For other uses, see Map (disambiguation). A map is a visual representation of an area a symbolic depiction highlighting relationships between elements of that space such as objects, regions, and themes. Many maps are static two dimensional,… …
99Navigation — This article is about determination of position and direction on or above the surface of the earth. For other uses, see Navigation (disambiguation). Table of geography, hydrography, and navigation, from the 1728 Cyclopaedia. Navigation is the… …
100Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …
