sine wave


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sine wave

Sinusoidal waveform A waveform of periodic oscillations–eg, in alternating current in which the amplitude of each point in the wave is proportional to the sine of the time from a start point Cardiology An EKG finding described in severe hyperkalemia where the 'P' wave disappears and the QRS complex and 'T' wave merge in an oscillating pattern

sine wave

(sīn wāv)
A symmetric wave representing one complete cycle of a single-frequency oscillation; the displacement of mass over time described by using a function from trigonometry, the sine.
See also: pure tone

sine wave

continuous, oscillating stream of energy, generated by an electrosurgery unit; used during surgery to section/separate soft tissues (see Table 1)
Table 1: Forms of electrosurgery
Electrosurgery typeFeatures
ElectrofulgurationUses a high-voltage, dampened waveform to produce a spark that arcs from the probe tip to the skin lesion, causing superficial charring of the lesion surface
ElectrosectionUses an undampened or mildly damped current in conjunction with a very fine emitting electron to produce a cutting effect through soft tissue
ElectrocoagulationUses an intermittent damped current in conjunction with a larger emitting electrode to produce less intense heat over a larger area to induce coagulation and thereby haemostasis
ElectrodesiccationUses an intermittent damped waveform with high voltage and a lower current emitted from a ball electrode to induce cell dehydration and tissue shrinkage
References in periodicals archive ?
The %THD of modified sine wave UPS is highest among all the UPS under test as shown in table 4.
Table 2b: Correlation values and differences for the reformatted clipped-sample restoration of the 1 kHz sine wave signal, using the two programs
Most NVH issues are analyzed in the frequency domain, which means that noise and vibration problems are analyzed in terms of sine waves of specific frequency (hz or cycles per second).
A sine wave effect is often observed in the sand properties within a sand system.
Centre Brands acquired two sine wave pumps to solve the pumping difficulties they had experienced.
But suppose you are studying a sine wave phenomenon.
Pure Sine Wave Inverters, a proprietary mobile power product within the Carmanah portfolio.
Schurter (Santa Rosa, CA) has added 3-phase sine wave output filters to its output filter portfolio.
The unit features two-phase synchronous sine wave outputs up to 171 MHz, with matching LVCMOS outputs, serial control, 500 MHz external clock input, and on-board TCXO (temperature compensated crystal oscillator), stable to [+ or -]1.