English

Appearance

View mode
Number of cards in a row Here you can select the number of cards to be placed in a row for each of supported screen resolutions. Your current resolution is highlighted in this way.
	Large desktop
	Desktop
	Tablet
	Phone

Page size

Total record count: 6269.

Records per page

Use the “Quick Search” box to locate your required term and/or definition. The following “Search conditions” can be used to refine your search: “Contains”, “Begins with”, “Ends with”, “Equals”, “Does not contain” or “Does not equal.”

	Eng ID	Term	Definition
	4221	radio spectrum	The RANGE of electromagnetic RADIATIONS useful for communication by RADIO (approximately 10 kilohertz to 300,000 MEGAHERTZ).
	4222	radio stars	Sources of RADIO WAVES existing in the universe. The position of many of the radio stars have been plotted but their SIGNALS are generally v... more Sources of RADIO WAVES existing in the universe. The position of many of the radio stars have been plotted but their SIGNALS are generally very weak.
	4223	radio station	A place equipped to transmit RADIO WAVES. Such a station may be either stationary or mobile, and may also be provided with a RADIO RECEIVER... more A place equipped to transmit RADIO WAVES. Such a station may be either stationary or mobile, and may also be provided with a RADIO RECEIVER. In British terminology, also called w/t station.
	4224	radiotheodolite	Electronic THEODOLITE designed to give the direction in space of a RADIO TRANSMITTER carried by a free balloon.
	4225	radio time signal	A TIME SIGNAL sent by RADIO.
	4226	radio transmitter	Equipment for generating radio signals.
	4227	radio wave(s)	See WAVE.
	4228	radius: cruising	See CRUISING RADIUS.
	4229	radius of visibility	See under VISIBILITY.
	4230	radius vector	A straight line connecting a fixed REFERENCE POINT or centre with a second point, which may be moving. In ASTRONOMY, the expression is usual... more A straight line connecting a fixed REFERENCE POINT or centre with a second point, which may be moving. In ASTRONOMY, the expression is usually used to refer to the straight line connecting a CELESTIAL BODY with another which revolves around it, as a radius vector of the EARTH and MOON. See COORDINATES: PLANE POLAR and COORDINATES: POLAR.
	4231	radome	A dome, usually of glass reinforced plastic, housing a radar aerial. These domes are often prominent. The term is also used for domes or po... more A dome, usually of glass reinforced plastic, housing a radar aerial. These domes are often prominent. The term is also used for domes or pods housing similar equipment in ships or on aircraft.
	4232	rafted ice	Type of PRESSURE ICE formed by one FLOE overriding another.
	4233	rafting	Pressure process whereby one piece of ICE overrides another. Most common in NEW and YOUNG ICE.
	4234	rain	PRECIPITATION of liquid water particles in the form of drops of more than 0.5 mm diameter or of smaller widely scattered drops.
	4235	rainbow	Groups of concentric arcs with colours ranging from violet to red, produced on a "screen" of water drops (raindrops, droplets of DRIZZLE o... more Groups of concentric arcs with colours ranging from violet to red, produced on a "screen" of water drops (raindrops, droplets of DRIZZLE or FOG) in the ATMOSPHERE by LIGHT from the SUN or MOON.
	4236	rainfall amount	Thickness of the layer of water which accumulates on a horizontal surface, as the result of one or more falls of PRECIPITATION, in the abse... more Thickness of the layer of water which accumulates on a horizontal surface, as the result of one or more falls of PRECIPITATION, in the absence of infiltration or evaporation, and if any part of the precipitation falling as SNOW or ICE were melted. Also called amount of precipitation.
	4237	rain gauge	See GAUGE.
	4238	raise the land	(v.t.). To sight LAND by approaching to the point where it appears above the HORIZON.
	4239	ram	The underwater projection of ICE from an ICE FRONT, ICE WALL, ICEBERG, or FLOE.
	4240	Ramark	A radar marker beacon which continuously transmits a SIGNAL appearing as a radial line on the PPI, the line indicating the DIRECTION of the... more A radar marker beacon which continuously transmits a SIGNAL appearing as a radial line on the PPI, the line indicating the DIRECTION of the BEACON. Ramarks are intended primarily for marine use. The name 'ramark' is derived from the words radar marker.
There are no records to display