beat

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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 ?
"Everybody is saying we will be facing seasoned sides (in Egypt) but I say every team is beatable," the Gor Mahia midfielder told Nation Sport."When you get into any match thinking 'we are here to limit the damage' then you are done.
"On the other hand, Clinton and Obama looked beatable at this point and yet they ran smart campaigns to come back from the dead.
on the pitch." are beatable, this for go with on Saturday.
Burnley, Watford beatable, statistics United will to nothing other Perhaps Man City became a little complacent once they scored a second but, as the home side poured bodies forward, Clark spotted a gap in their defence and played an inch-perfect pass to release Murphy through the middle.
Yet most observers make twice French Open champions Williams the favourite -- even if she has suffered niggling injuries of late and can be at her most beatable on the red dirt.
Former professional boxer turned undefeated mixed martial arts contender Holly Holm believes that current Ultimate Fighting Championship (UFC) women's bantamweight champion Ronda Rousey is beatable mainly because she is human.
"Everyone is beatable, the most consistent teams in the world are beatable on any given day.
"I've watched (English welterweight champion) Bradley Skeete - and he's definitely beatable.
Sport can be so cruel but I guess that is what makes it such compelling viewing, and at least the Irish have shown the rest of us that the men in black are definitely beatable.
She's 4-6 from 8-11 with Ladbrokes to oust Sorana Cirstea today but while the Romanian third seed looks beatable, the rapidly improving fourth seed Urszula Radwanska could prove troublesome if the Pole sets up a final clash with the 18-year-old Robson.
Beatable "Looking at how the tournament has gone, you can't predict anything.