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Electric field that exists when a difference in electrical potential causes a stress in the dielectric between two points .
A waveguide junction in which the junction arm extends from the main
waveguide in the same direction as the E-field in the waveguide .
(1) The reflection of the original sound wave as it bounces off a distant surface . (2) The RF signal reflected back from a radar target .
A resonant cavity device that is used to check the overall performance of a radar system. It receives a portion of the transmitted pulse and retransmits it back to the receiver as a slowly decaying transient .
A condition in which the satellite is not in view or in direct line of sight with the sun. This happens when the earth is between them .
Induced circulating currents in a conducting material that are caused by a varying magnetic field  .
EDDY CURRENT LOSS
Losses caused by random current flowing in the core of a transformer. Power
is lost in the form of heat .
Also called RICHARDSON EFFECT. The phenomenon wherein electrons emitted
from a heated element within a vacuum tube will flow to a second element that is connected to a positive potential .
Same as ROOT-MEAN-SQUARE .