Gunn effect
The generation of high-frequency (usually microwave) oscillations within a semiconductor whenever an applied DC voltage exceeds its threshold value.
252 entries.
The generation of high-frequency (usually microwave) oscillations within a semiconductor whenever an applied DC voltage exceeds its threshold value.
A person who operates a gun.
The space left by the removal of ore, defined by some as being equivalent to a yard.
A vacant space left in the ground after a lode has been mined.
A kind of logic signaling used to drive electronic backplane buses, having a voltage swing between 0.4 and 1.2 volts, much lower than that used in TTL and CMOS logic, and symmetrical parallel resistive termination.
An armed helicopter tasked to attack the enemy.
A gutter or channel for water, hewn out of the bottom of a working drift.
A kind of bracket, or angular part, fastened in the angles of a structure to give strength or stiffness; especially, the part joining the barrel and the fire box of a locomotive boiler.
One of a number of pieces of wood or metal, grooved in the centre, used to separate the pages of type in a form.
Initialism of gross vehicle weight rating, the maximum allowed weight of a vehicle and its contents.
An autogyro, similar to a helicopter.
Abbreviation of gadolinium gallium garnet.