(from the article `electricity`) ...The effect can be enhanced by the application of an alternating electric field of the same frequency as the natural mechanical vibration frequency ... ...cos , is 1. Figure 25 illustrates the variation of the average power with the angular frequency of the sinusoidal electromotive force. The ... [2...
Found on
http://www.britannica.com/eb/a-z/q/3
for a capacitor or inductor under periodic conditions, ratio of the absolute value of the reactive power to the active power NOTE 1 - The quality factor is a measure of the losses, usually unwanted, in a capacitor or an inductor. NOTE 2 - The quality factor depends generally on frequency and voltage.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=151-15-45
for a resonant circuit at the resonance frequency, 2p times the ratio of the maximum stored energy to the energy dissipated during one period NOTE - The quality factor is a measure of sharpness of the resonance.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=151-15-46
factor in the calculation of dose equivalent, by which the absorbed dose is to be weighted in order to account for different biological effectiveness of radiations NOTE - The dependence of Q on linear energy transfer is specified by the International Commission on Radiation Units and Measurements.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-14-77
a measure of sharpness of resonance of a system, being 2p times the ratio of the maximum stored energy to the energy dissipated during one cycle NOTE - Historically, the letter Q was an arbitrarily chosen symbol to designate the ratio of reactance to resistance of a circuit element. The name 'quality factor' was introduced later.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=801-24-12
a weighting factor for absorbed dose to allow for the effect on health detriment of the radiation quality NOTE - Quality factor is specified by I.C.R.P. as a function of the linear collision stopping power in water.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-14-03
The ratio of reactance to resistance in a coil which affects Q.
Found on
http://www.encyclo.co.uk/local/20447
<radiobiology> (Q) A multiplying factor used with absorbed dose to convert to dose equivalent and therefore to express the radiation's effectiveness in causing biological effects. ... (16 Dec 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
The Quality Factor is used to modify the Absorbed Dose in Gray (Gy) by multiplying to obtain a quantity called the Equivalent Dose (Sv ). It is used because some types of radiation, such as Alpha Particles , are more biologically damaging internally than other types such as the Beta Particle . The factor is determined by the US Nuclear Regulatory ....
Found on
http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=q
(QF) Type: Term Definitions: 1. a factor by which absorbed radiation doses are multiplied to obtain, for radiation protection purposes, a quantity that expresses the approximate biologic effectiveness of the absorbed dose.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=31775
(Q) Sometimes referred to as the Q factor, the quality factor is the ratio of energy loss compared to stored energy. Higher numbers signify a lower dissipation level per stored energy
Found on
http://www.used-line.com/glossaries/glossary.cfm?g_id=29
The quality factor defines the sharpness of resonance.It is defined as:whereQ = quality factor?
0 = resonance frequency [rads
-1]?
1 = is the frequency below resonance for which the average power has dropped to half that at resonance [rads
-1]?
2 = is the frequency above resonance for which the aver...
Found on
https://www.encyclo.co.uk/local/20687
No exact match found.
