radial limit
71flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
72Force — For other uses, see Force (disambiguation). See also: Forcing (disambiguation) Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate …
73Airy disk — Computer generated image of an Airy disk. The gray scale intensities have been adjusted to enhance the brightness of the outer rings of the Airy pattern …
74Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …
75Upsilon Andromedae b — Planetbox begin name = Upsilon Andromedae b Planetbox image caption = An artist s impression of Upsilon Andromedae b and its sun.Planetbox star star = Upsilon Andromedae A constell = Andromeda RA = RA|01|36|47.8 DEC = DEC|+41|24|20 dist ly = 43.9 …
76History of Richmond Hill, Ontario — The history of Richmond Hill began when the First Nations came and settle in the area. With the Toronto purchase, the town gradually expanded with new greenhouse industries and improved transportation infrastructure. First Nations The first… …
77Gliese 1 — GJ 1 Observation data Epoch J2000      Equinox J2000 Constellation Sculptor Right ascension 00h 05m 24.4279s[1] …
78Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
79Electromagnet — An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of other electrical devices,… …
80environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …
