Electronics (Mike Jaroch)

(1) A substance, in chemistry, that cannot be divided into simpler substances by any means ordinarily available [1]. (2) A part of an antenna that can be either an active radiator or a parasitic radiator [10].

Ducting used for ventilation purposes [4].

The angle between the horizontal plane and the line of sight to a target or object [11] [18].

Temporary source of limited electrical power used upon the loss of the normal
power source [18].

The force that causes electricity to flow between two points with
different electrical charges or when there is a difference of potential between the two points. The unit of measurement is volts [1].

The element in a transistor that emits current carriers (electrons or holes) [7] [13].

The transistor equivalent of the cathode modulator. The gain is varied by changing the voltage on the emitter [12].

A synthetic compound of cellulose acetate (wood pulp and magnesium). Used to insulate wire in meters, relays, and motor windings [4].

Imbedded in solid material or enclosed in glass or metal [14].

A method in which one end of an antenna is connected through a capacitor to the final output stage of a transmitter [10].