type of insulating material
71Oil-drop experiment — The purpose of Robert Millikan and Harvey Fletcher s oil drop experiment (1909) was to measure the electric charge of the electron. They did this by carefully balancing the gravitational and electric forces on tiny charged droplets of oil… …
72Wellington boot — The Wellington boot, also known as a wellie, a topboot, a gumboot, or a rubber boot, is a type of boot based upon Hessian boots. It was worn and popularised by Arthur Wellesley, 1st Duke of Wellington and fashionable among the British aristocracy …
73Chester Carlson — Chester Floyd Carlson Born February 8, 1906(1906 02 08) Seattle, Washington, United States Died September 19, 1968(1968 …
74Teleforce — was Nikola Tesla s charged particle beam projector, first mentioned publicly in the New York Sun on July 10, 1934. IntroductionThe term teleforce refers to Nikola Tesla s macroscopic charged particle beam projector. The device was based upon a… …
75Coaxial power connector — Most common coaxial power connector, male and female, 5.5 x 2.5 mm …
76Mil Mi-26 — Mi 26 Russian Air Force Mi 26 Role Heavy lift cargo helicopter …
77Feed line — The Feed line in a radio transmission, reception or transceiver system is the physical cabling that carries the RF signal to and/or from the antenna. It is also called a transmission line. When operating properly, and under ideal conditions, the… …
78Pull switch — A pull switch is a switch that is actuated by means of a chain or string. An electric pull switch is attached to a toggle type switch: one pull to switch on and next pull to switch off. The most common use of a pull switch is to operate an… …
79Oil drop experiment — Millikan s setup for the oil drop experiment The oil drop experiment was an experiment performed by Robert Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron). The experiment entailed… …
80finned-head fire detector — A nonresetting fire detector. It is made up of molded insulating material housing a pair of silver radium electrical contacts. A fusible joint holds the contacts apart. With the rise in temperature beyond 200 to 210°C, the joint fuses and the… …
