# subharmonic

Also found in: Encyclopedia, Wikipedia.

## sub·har·mon·ic

(sŭb′här-mŏn′ĭk)
Of, relating to, or being a wave with a frequency that is a fraction of a fundamental frequency.

## subharmonic

(ˌsʌbhɑːˈmɒnɪk)
n
(General Physics) a fraction of a frequency
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
For Hamiltonian systems, it was used in Jiang and Tang [7] to obtain the existence of periodic and subharmonic solutions for problem (1.1), and in Ma and Zhang [11] for p-Laplacian systems.
Ghil, "El Nino on the devil's staircase: annual subharmonic steps to chaos," Science, vol.
Zanolin, "Subharmonic solutions for some second order differential equations with singularities," SIAM Journal on Mathematical Analysis, vol.
Yu, "Existence of periodic and subharmonic solutions for second-order superlinear difference equations," Science in China.
Kleiser, "Subharmonic transition to turbulence in a flat-plate boundarylayer at Mach number 4.5," Journal of Fluid Mechanics, vol.
Subharmonic mixers offer an alternative to fundamental mixers in that the LO frequency is at some integer fraction 1/n of the fundamental LO frequency [f.sub.IF] = [absolute value of [f.sub.RF] - (n x [f.sub.LO])].
Aitken, "Using the fast orthogonal search with first term reselection to find subharmonic terms in spectral analysis," Annals of Biomedical Engineering, vol.
Generally not recommended to fall below 40 kHz ultrasound frequency, because the first subharmonic is in the audible range and noise can become harmful to the operator.
The compact unit uses a fundamental VCO to achieve the desired output frequency, eliminating possible spectrum contamination from subharmonic products.
Therefore some extreme situations can appear during exploitation of CRS in cases of specific conditions: high amplitude components of subharmonic vibrations may by generated, rubbing of rotor and housing elements caused by increased eccentricity of shafts may appear, etc.
Specific topics explored include zeros of functions in weighted and Bergman spaces, Blaschke-type conditions for analytic and subharmonic functions, interpolation sequences for the Bernstein algebra, differentiability of functions of contractions, and free interpolation in the Nevanlinna class.
Site: Follow: Share:
Open / Close