Frequency equal

Amplifier noise. Can be of two kinds white noise results from random fluctuations of signal over a power spectrum that contains all frequencies equally over a specified bandwidth pink noise results when the frequencies diminish in a specified fashion over a specified range. 

Variable nozzles produce a series of jets of gas entering the rotor, and these impulses add up to form a frequency equal to the blade-passing frequency the number of revolutions per second multiplied by the number of nozzle vanes, which is of the order of thousands of cycles per second. Frequently the rotor will resonate at this frequency, and if it does, it will be fatigued and crack and break up thus these frequencies must be avoided, and the manufac turer should be asked to supply information to the customer on this subject. 

The dimensionless upside-down barrier frequency equals = 2(1 — and the transverse frequency Qf = Q. The instanton action at = oo in the one-dimensional potential (4.41) equals [cf. eq. (3.68)]... 

Fig. 54. Universal correlation between T , and tunneling frequency A. The values of A are given in peV (1 peV 8.066 X 10 cm = 2.42 x 10 Hz). The Zeeman frequency equals 21 MHz. The points correspond to different chemical species.

This represents a shaking force at a frequency equal to rotor speed. For foundation design, a value of 5 to 10 times the residual unbalance or A to 1 times rotor weight at operating speed would be a reasonable design value. The direction of the force is perpendicular to the shaft, and operates as a rotating vector which can be centered between the bearings. 

The helical timing gears generate a meshing frequency equal to the number of teeth on the male shaft multiplied... 

Sum This type of modulation, which is described in the example above, generates a series of frequencies that include the fundamental shaft speeds, both input and output, and fundamental gear-mesh profile. The only difference between the real frequencies and the ghost is their location on the frequency scale. Instead of being at the actual shaft-speed frequency, the ghost appears at frequencies equal to the sum of the input and output shaft speeds. Figure 44.40 illustrates this for a speed-increaser gearbox. 

The heated body emits light with a spectral composition that depends on the material s composition. That observation is not the case for an ideal radiator or absorber ideal objects will absorb and thence re-emit radiation of all frequencies equally and fully. A radiator/absorber of this kind is called a black body, and its radiation spectrum is referred to as black-body radiation, which depends on only one parameter, its temperature, so a hotter body absorbs more light and emits more light. 

Sleiched278 has indicated that this expression is not valid for pipe flows. In pipe flows, droplet breakup is governed by surface tension forces, velocity fluctuations, pressure fluctuations, and steep velocity gradients. Sevik and Park 279 modified the hypothesis of Kolmogorov, 280 and Hinze, 270 and suggested that resonance may cause droplet breakup in turbulent flows if the characteristic turbulence frequency equals to the lowest or natural frequency mode of an... 

The value of a is always negative, so that the solutions will always be oscillatory and expressible in terms of the normal circular functions, with a frequency equal to the square root of — a, namely... 

Fig. 2. The different stages of a field-cycling experiment. Spins are pre-polarized in a relatively high static magnetic field (Bq). The relevant magnetization then decays to its equilibrium value in the field Bq according to the longitudinal relaxation time of interest (at a frequency equal to yBQl2n). For sensitivity reasons, magnetization is read again in the Bq field (a n/2 pulse yielding an fid Acq).

The frequency equals n,/n, where rii is the number of things having the same value or property Xi divided by the total population of things. It follows that the mean can also be calculated from knowledge of the frequency, such that... 

In these equations, Ej represents the electrode potential during the yth half period, 5 the fraction of the square-wave half period at which the current is measured, / is the square-wave frequency (equal to the inverse of the square-wave period), and the other symbols have their customary meaning. As long as the square-wave amplitude, Esw, is lower than 0.5RT jnF—a condition easily accomplished under the usual experimental conditions—the differential sum of the currents flowing during the anodic and cathodic half cycles can be represented by an expression such as [184]... 

The pulse shapes from the optimal control experiment provide strong support to the nanoplasma model. The optimal result can easily be interpreted in terms of a first pulse that creates an overdense plasma which subsequently undergoes expansion and a second pulse, which interacts with the plasma when the plasma frequency equals the laser frequency. 

If incident radiation with a frequency equal to one of the fundamental frequencies falls on a molecule, it may make a transition from the ground state to the appropriate fundamental level. These normal frequencies usually occur in the infra-red spectral region. The probability of such a transition occurring, however, depends on the relationship between the molecule s electric dipole moment (as a function of the nuclear coordinates) and the wavefunctions of the ground state and of the fundamental level. 

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