# first harmonic

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Related to first harmonic: third harmonic

## first harmonic

[¦fərst här′män·ik]
(physics)
References in periodicals archive ?
The additional noise apparent in the sound measurements is either side banding due to insert runout, or in the case of the first harmonic, of the machine tool RPM probably some minor axis misalignment between the tool and spindle.
The association between each covariate and time of year of conception was evaluated by treating each covariate in turn as the outcome and time of year of conception as a predictor, using a harmonic logistic or linear regression model and a likelihood ratio statistic to assess the improvement in fit achieved through inclusion of the first harmonic.
The diagram shows that the instantaneous value of the first harmonic voltage at the input rectifier bridge [u.
Even if the first harmonic approximation is an attractive method, it is important to remember that the first harmonic approximation is an approximation and more accurate when the signal of the oscillator is a purer tone.
By comparison of the magnitude of the first harmonic of the linkage flux in equations (9) and (10) we get the amplitude [n.
So if a TWTA produced 200 W at the fundamental frequency and 200 W at the first harmonic frequency, there would be no way of knowing that a major portion of the measured field strength was created at a bogus test frequency.
In the first harmonic mixer, the eighth harmonic of the LO is mixed with the sampled RF signal from the DUT to create a 270 MHz reference IF signal to input to the VNA.
For example, while the first harmonic spectrum covers the high register the subharmonic one covers the low register.
an] of two first harmonics for the circuit A-0 in the coordinate system X, Y, Z (Fig.
ef] indicates what part of the first harmonic relative rotational magnetomotive force remains after the compensation of negative effect of its higher harmonics [7], For the sinusoidal winding, it is 0.
In a real environment, the first harmonic is relatively easier to be observed than other harmonics.
Chris, one of the artistic directors of the Harmonic Festival which will be running for the second time in the autumn, formed a new band for the first Harmonic.

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