Rf meaning

Radio frequency.
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Radio frequency.
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Rinforzando.
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Radio frequency.
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Rutherfordium.
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(Radio Frequency) The range of electromagnetic frequencies above the audio range and below infrared light (from 10 kHz to 300 GHz). RF transmission includes AM and FM radio, analog and digital TV, satellite communications, cordless phones, cellular and Wi-Fi. Signals can be focused in one direction (directional), or they can transmit in all directions (omnidirectional).Frequency and PowerThe range of frequencies and power output determine how well RF signals can penetrate objects. Signals up to 5 GHz can generally transmit through wooden and plaster walls in their path, but the higher the frequency, the more an unobstructed view from transmitter to receiver is required. See line of sight, RF modulation, RF shielding, RF remote control, RFI, microwave and ISM band.
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The frequencies of the electromagnetic spectrum associated with radio waves, rather than electricity, light, x-rays, gamma rays, or cosmic rays. See also electromagnetic spectrum and frequency.
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(chemistry) Symbol for rutherfordium.
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Symbol for the rufiyaa, the currency of the Maldives.
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Rf Sentence Examples

  • frbs which occur on particular dry kinds of soil, such as lime- rf one rocks, stiff clay, and so forth (Warming, 1909: 289).

  • Soon after quitting the uterus it is joined by a long duct leading from a glandular sac, the spermatheca (Rf).

  • d, 'ps, ' Rf, vd, 'd` ' 'J?1 ' Pe;:--pd 'ee ' or disappearance of one phase of shell-formation before a later one is entered upon.

  • If al, a2, ...a, n be the roots of f=o, (1, R2, -Ai the roots of 0=o, the condition that some root of 0 =o may qq cause f to vanish is clearly R s, 5 =f (01)f (N2) � �;f (Nn) = 0; so that Rf,q5 is the resultant of f and and expressed as a function of the roots, it is of degree m in each root 13, and of degree n in each root a, and also a symmetric function alike of the roots a and of the roots 1 3; hence, expressed in terms of the coefficients, it is homogeneous and of degree n in the coefficients of f, and homogeneous and of degree m in the coefficients of 4..

  • rf > a> b> o> a'> -Do; and then so that PT =c/Zir, and the curve AP is the tractrix; and the coefficient of contraction, or breadth of the jet breadth of the orifice - +i' A change of S2 and 0 into nS2 and nO will give the solution for two walls converging symmetrically to the orifice AA 1 at an angle zr/n.

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