radio observation | an observation made with a radio telescope |
valve | one of the paired hinged shells of certain molluscs and of brachiopods |
valve | the entire one-piece shell of a snail and certain other molluscs |
accelerator throttle throttle valve | a valve that regulates the supply of fuel to the engine |
ball valve | any valve that checks flow by the seating of a ball |
butterfly valve | a valve in a carburetor that consists of a disc that turns and acts as a throttle |
clack valve clack clapper valve | a simple valve with a hinge on one side, allows fluid to flow in only one direction |
clock radio | a radio that includes a clock that can be set to turn it on automatically |
diode rectifying tube rectifying valve | a thermionic tube having two electrodes, used as a rectifier |
exhaust valve | a valve through which burned gases from a cylinder escape into the exhaust manifold |
heart valve | an implant that replaces a natural cardiac valve |
intake valve | a valve that controls the flow of fluid through an intake |
omnirange omnidirectional range omnidirectional radio range | a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing |
poppet poppet valve | a mushroom-shaped valve that rises perpendicularly from its seat, commonly used in internalombustion engines |
push-button radio | a radio receiver that can be tuned by pressing buttons |
radar microwave radar radio detection and ranging radiolocation | measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects |
radio wireless | a communication system based on broadcasting electromagnetic waves |
radio antenna radio aerial | omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received |
radio beacon beacon | a radio station that broadcasts a directional signal for navigational purposes |
radio chassis | a chassis for a radio receiver |
radio compass | a direction finder that gives a bearing by determining the direction of incoming radio signals |
radio interferometer | radio telescope that uses interference patterns from two antennas instead of a parabolic antenna |
radio link link | a two-way radio communication system (usually microwave), part of a more extensive telecommunication network |
radio-phonograph radio-gramophone | electronic equipment consisting of a combination of a radio receiver and a record player |
radio receiver receiving set radio set radio tuner wireless | an electronic receiver that detects and demodulates and amplifies transmitted signals |
radio station | station for the production and transmission of AM or FM radio broadcasts |
radio telescope radio reflector | astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extraterrestrial sources |
radio transmitter | transmitter that is the part of a radio system that transmits signals |
rocker arm valve rocker | a lever pivoted at the center, used especially to push a valve down in an internalombustion engine |
safety valve relief valve escape valve escape cock escape | a valve in a container in which pressure can build up (as a steam boiler), it opens automatically when the pressure reaches a dangerous level |
slide valve | valve that opens and closes a passageway by sliding over a port |
sluicegate sluice valve floodgate penstock head gate water gate | regulator consisting of a valve or gate that controls the rate of water flow through a sluice |
tube vacuum tube thermionic vacuum tube thermionic tube electron tube thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
valve | control consisting of a mechanical device for controlling the flow of a fluid |
valve | device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone |
valve-in-head engine | internalombustion engine having both inlet and exhaust valves located in the cylinder head |
radio brightness | the strength of a radio wave picked up by a radio telescope |
radio frequency | an electromagnetic wave frequency between audio and infrared |
mitral valve bicuspid valve left atrioventricular valve | valve with two cusps, situated between the left atrium and the left ventricle |
tricuspid valve right atrioventricular valve | valve with three cusps, situated between the right atrium and the right ventricle, allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts |
atrioventricular valve | either of two heart valves through which blood flows from the atria to the ventricles, prevents return of blood to the atrium |
aortic valve | a semilunar valve between the left ventricle and the aorta, prevents blood from flowing from the aorta back into the heart |
pulmonary valve | a semilunar valve between the right ventricle and the pulmonary artery, prevents blood from flowing from the artery back into the heart |
semilunar valve | a heart valve with cusps shaped like half-moons, prevents blood from flowing back into the heart |
heart valve cardiac valve | a valve to control one-way flow of blood |
valve | a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it |
ileocecal valve | valve between the ileum of the small intestine and the cecum of the large intestine, prevents material from flowing back from the large to the small intestine |
pyloric sphincter pyloric valve musculus sphincter pylori | the sphincter muscle of the pylorus that separates the stomach from the duodenum |
radio astronomy | the branch of astronomy that detects and studies the radio waves emitted by celestial bodies |
radio radiocommunication wireless | medium for communication |