81 electronic
which is fired out of the aircraft while
the crew-member is still in it ejector /.dekt./ noun 1. a device to throw something out forcefully 2. a device using a jet of water, air, or steam to withdraw a fluid or gas from a space
. A jet transfer pump or fuel ejector is used to transfer fuel.
elapse /.lps/ verb to pass . The
radio altimeter works on the principle that, if the path followed by the radio wave is straight down and up, then the elapsed time between the outgoing and incoming signal is a function of the air-craft’s height.
elastic /.lst.k/ adjective flexible, easily returning to its original shape after being stretched or expanded . At low values of stress, if the plot of stress and strain is a straight line, this indi-cates that the material is elastic within this range.
elasticity /.lst.s.ti/ noun the prop-erty of returning to an original form or state following deformation . Titanium falls between aluminium and stainless steel in terms of elasticity, density and elevated temperature strength.
electric /.lektr.k/ adjective powered
or worked by electricity
electrical /.lektr.k(.)l/ adjective 1.
referring to electricity . an electrical fault 2. powered or worked by electric-ity . Activation may be mechanical or electrical.
electric current /.lektr.k kr.nt/
noun the mass movement of electric charge in a conductor
electricity /.lektr.s.ti/ noun an
electric current used to provide light, heat, power

electric power /.lektr.k paυ./
noun electricity used to drive machines or devices
electro-/.lektr.υ/ prefix electricity electrode /.lektr.υd/ noun a solid electrical conductor through which an electric current enters or leaves an elec-trolytic cell . A battery has a positive and a negative electrode.
electrolyte /.lektr.la.t/ noun a
chemical compound that becomes con-
ductive when dissolved or molten . The electrolyte in a lead-acid battery con-sists of sulphuric acid diluted with dis-tilled water.
electrolytic /.lektr.l.t.k/ adjective
. electrolytic cell a cell consisting of electrodes in an electrolyte solution
electro-magnet /.lektr.υ mn.t/ noun a magnet consisting of a coil of insulated wire wrapped around a soft iron core that is magnetised only when current flows through the wire
electro-magnetism /.lektr.υ mn.t.z(.)m/ noun a force exerted by a magnetic field found around any conductor carrying current, the strength of which will depend on the amount of current flow
electromotive force /. lektr.υm.υt.v f.s/ noun a source of electrical energy required to produce an electric current, produced by devices such as batteries or generators and measured in volts. Abbreviation emf