Materials left over from making nuclear energy. Radioactive waste can living organisms if it is not stored safely.

An instrument for measuring radiant energy. See actinometer, Dines radiometer, photometer, Tulipian radiometer.

A balloon-borne instrument for the simultaneous measurement and transmission of meteorological data. It includes transducers for the measurement of pressure, temperature, and humidity; a modulator for the conversion of the output of the transducers to a q ...

A balloon used to carry a radiosonde aloft, considerably larger than pilot balloons or ceiling balloons.

A component of a radiosonde consisting of a series of alternate electrically conducting and insulating strips. As these are scanned by a contact the radiosonde transmits temperature and humidity signals alternately. The contact may be a baroswitch as in t ...

That part of an audio-modulated radiosonde consisting of the baroswitch, the sensing elements, the reference elements, and the relay.

An evaluation of upper air temperature, pressure, and humidity from radio signals received from a balloon- borne radiosonde.

An instrument, located at the surface observing station, which is used to record the data presented by a radiosonde aloft.

The component of the radiosonde which includes the modulating blocking oscillator and the radiofrequency carrier oscillator.

Apparatus consisting of (a) standard radiosonde and radiosonde ground equipment to obtain upper-air data on pressure, temperature, and humidity, and (b) a self-tracking radio direction-finder to provide the elevation and azimuth angles of the radiosonde s ...

Invisible waves in the electromagnetic spectrum that are used to communicate (radio) - and navigate (radar).

A bun-shaped cover placed over a radar scanner to prevent risk of fouling and to protect it from the weather.

A naturally occurring radioactive gas found in the U.S. in nearly all types of soil, rock, and water. It can migrate into most buildings. Studies have linked high concentrations of radon to lung cancer.

A small flat boat, usually inflatable.

A construction element used for ceiling support.

(1) When two or more boats tie up alongside each other. (2) Overlapping of edges of two ice-floes, so that one floe is partly supported by the other.

A slang term for an open-top trailer or container with a tarpaulin cover.

(1) The edge where the deck joins the hull; top edge of bulwarks. (2) The railing around the deck.

The amount of money an ocean carrier pays to the railroad for overland carriage.

The time that the container was discharged (grounded) from the train.