The lateral, or pitch, axis of an aircraft. Cf axis,
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A maze similar to a y-maze, but in which the arms are not at right angles to the stem.
Pair of electrodes to which voltage producing vertical deflection of spot is applied in accordance with cartesian co-ordinate system.
A term used to classify a type of dichromatism. An observer sees only two colours when examining the solar spectrum, blue and yellow, separated by a white patch. The relative extent of the two colours is the Y/B ratio.
An end-fire array, characterized by directors in front of the normal dipole radiator and rear reflector.
A style of binding with overlapping limp covers, much used for pocket bibles to protect the fore-edges,
Unit of length in the foot-pound-second system formerly fixed by a line standard Weights and Measures Act of 1878, redefined in 1963 as 0-9144 m.