Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR FREQUENCIES

On special order this Tungar may be obtained for operation on other frequencies.

On special order it may be obtained for operation on 115 volts and also for other frequencies.

Consequently it can only directly apprehend wave-lengths, not frequencies.

To find the interval between two frequencies we divide one by the other.

"The receptor-area responding to the frequencies of the report," Ayesha said.

The low bass notes are produced by the low vibration  frequencies.

The frequencies of two, three, and four loomstrings at the ends of webs in this group are approximately as 6:32:16.

The frequencies of the left and the right twist in yarns are indicative of motor habits, if nothing more.

It operates on a band of frequencies lying between the longest light and heat waves and the shortest radio waves.

Ray six, "the softener," was a band of frequencies extending from violet far up into the ultra-violet.

WORD ORIGIN

1640s, "fact of occurring often," from Latin frequentia "a crowding, crowd," from frequentem (see frequent).

Earlier it had been used in a now-obsolete sense of "state of being crowded" (mid-16c.); sense in physics, "rate of recurrence," especially of a vibration, is from 1831. In radio electronics, frequency modulation (1922, abbreviated F.M.) as a system of broadcasting is distinguished from amplitude modulation (or A.M.).

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.