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(1) These radio waves are coming at 15000 hertz.

(2) We directed radio waves around the globe.

(3) Radio waves are converted into electrical impulses.

(4) Sound waves, light waves, and radio waves have a certain frequency, or number of waves per second.

(5) When atmospheric conditions are right, radio waves bounce off the ionosphere and can be received many thousands of miles away.

(6) The idea behind radar was to send out radio waves and listen for echoes from enemy craft.

(7) Radio antennas receive radio waves and change them into electrical signals which are then turned into sound by the speakers.

(8) In electronics[sentencedict.com], a spiral is used to convert radio waves into electrical impulses.

(9) Due to the radio waves which this equipment gives off, an electrical current is induced into the water.

(10) The radio waves may come not only from transmitters but power supplies, motors or other electrical devices.

(11) The objectors said radio waves from the latter could cause explosions in the plant.

(12) Radio waves are electromagnetic waves with a very long wavelength, measurable in metres.

(13) The radio waves, magnetic field and computer technology combine to produce vivid images of the body's soft tissue.

(14) To introduce the fundamental characteristics of radio wave propagation.

(15) Radio wave: Wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves.

(16) Propagation characteristic of UHF radio wave in rectangle , circle and arched tunnels is studied in this paper and the computing equation for attenuation constant is deduced.

(17) Realtime correction method is mainly used in radio wave refraction error correction to improve radio instrumentation accuracy in engineering applications.

(18) Application and experiment result of radio wave in roadways is introduced. Sentencedict.com

(19) Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space.

(20) He also experimented with photography, and did significant early work with X-rays from 1896, and with radio waves from 1897.

(21) The field theory progressed even more dramatically when, a few decades later, Hertz produced the radio waves predicted by the programme.

(22) He carried out experiments on the propagation of short and ultra-short radio waves, which were then thought to be unusable.

(23) By surrounding the radio with aluminum foil, we neutralize or block the radio waves.

(24) The cavity magnetron was simple, rugged and cheap, and produced short wavelength radio waves - microwaves.

(25) We have, in fact, as well as polluting our environment chemically also polluted it with radio waves of varying frequencies.

(26) In the empty rectangular straight tunnel, the influence to the propagation loss and RMS time delay spread of the radio wave is investigated.

(27) This paper proposes a formula fitting method for realtime correction of radio wave refraction errors for fast determination of the refraction error and improvement of radio instrumentation accuracy.

(28) We adopt differ method for corresponding differ accuracy in radio wave refractive errors correction.

(29) The Geographic Information System (GIS) can be incorporated into this procedure because most of the factors in radio wave propagation are geographic features.

(30) The various factors, such as noise, interference and fading, relating to radio wave propagation circuits, as well as the methods dealing with the factors are described.