beat

(redirected from beating down)
Also found in: Dictionary, Thesaurus, Medical, Legal.

beat

1. Physics the low regular frequency produced by combining two sounds or electrical signals that have similar frequencies
2. Prosody the accent, stress, or ictus in a metrical foot
3. Nautical a course that steers a sailing vessel as close as possible to the direction from which the wind is blowing
4. 
a. the act of scouring for game by beating
b. the organized scouring of a particular woodland so as to rouse the game in it
c. the woodland where game is so roused
5. Fencing a sharp tap with one's blade on an opponent's blade to deflect it

Beat

A variation in the intensity of a composite wave which is formed from two distinct waves with different frequencies. Beats were first observed in sound waves, such as those produced by two tuning forks with different frequencies. Beats also can be produced by other waves. They can occur in the motion of two pendulums of different lengths and have been observed among the different-frequency phonons in a crystal lattice.

One important application of beat phenomena is to use one object with an accurately known frequency to determine the unknown frequency of another such object. The beat-frequency or heterodyne oscillator also operates by producing beats from two frequencies.

beat

[bēt]
(physics)
The periodic variation in amplitude of a wave that is the superposition of two simple harmonic waves of different frequencies.

beat

i. A low-frequency vibration produced when two sources of vibration act on the same object at the same time. For example, in a multiengine airplane, if two engines have slightly different RPM, airframe vibrations produced by these engines will produce a very noticeable beat.
ii. When two waves are combined or superimposed, a beat occurs if two frequencies are not the same. Waves beat together to create the appearance of either a change in amplitude, if the frequencies differ by a few hertz (Hz), or new frequencies, called beat frequencies or heterodynes, if the original frequencies are far apart.
References in periodicals archive ?
Abraham had pleaded with him to spare Sodom, beating down the required condition from 50 just men in the city to ten; the story is archaic and somewhat reminiscent of bargaining in a market, but the message is clear.
With the stock at eight-year highs and solidly outperforming the SPX, you would imagine analysts were beating down the stock's proverbial door.
WEXFORD midfielder Brendan Doyle said the team was always confident of beating Down having seen them off during their National League Division Three winning campaign earlier this year.
With the noon sun and Davenport beating down on her, Sugiyama didn't have to put up with either very long.
They sell them everywhere here and on a hot day, when the sun is beating down and I've got a bit of a sweat on, there is nothing better.
Allow them to tell you if they hear you getting stuck in blaming your ex-employer, your outplacement counselor, or the human resources people that aren't beating down your door to hire you.
With summer heat beating down on the San Fernando Valley, the Los Angeles Department of Water and Power (LADWP) has flipped the switch to energize a new power distributing station in the Sherman Oaks area to help ensure the reliable flow of electricity to local residents and businesses.
Westmeath are back in the Leinster race after taking a year in Tier 2 where they won the Christy Ring Cup, beating Down in the final.