Line wave generator

Line Wave Generator. Devices for controlling the sequence of arrival of detonation waves at... 

Another line wave generator of the manifold type consists of perforated sheet expl (See Fig)... 

Line Wave Generator of Warped Sheet of Explosive... 

Refs 1) New Explosives Specialties Brochure on Line-Wave Generators, duPont Co, Explosives Products Div, Wilmington, Del 19898 Abstract in Expls Pyrots 5 (12) (1972)... 

Figure 3.29 The intensity of the second harmonic wave generated in an autocorrelator as a function of the displacement of the moving mirrors system. The insets show the intensity versus time curves for pulses A and B of Figure 3.28 (solid and dashed lines, respectively).

FIGURE 6.7 Squares the calculated amplitude of the electric field of the TH wave generated by a particle of diameter, D. is the wavelength of the incident radiation in the particle s material. Solid line with the sixth power dependence of the TH signal on the particles diameter. Solid line the fourth power dependence of the TH signal on the particles diameter. 

Fig 33, from Ref 17, is a schematic representation of the effects of a nearby surface on pressure pulse shapes at various distances below the water surface. It also shows the expected pulse shapes for acoustic rather than shock waves A shock wave in water will be reflected as a rarefaction wave when it encounters another medium less dense than water, eg, a water/air boundary. The rarefaction wave, generated by the reflection of the primary shock wave from the surface, propagates downward and relieves the pressure behind the primary shock wave. If the shock wave is treated as a weak (acoustic) wave, this interaction instantaneously decreases the pressure in the primary shock wave to a negative value, as shown by the broken line in Fig 33 (Ref 17), Point A. Cavitation occurs in seawater when its pressure decreases to a value somewhat above its vapor pressure. The pressure of the primary shock wave is, therefore, reduced to a value which is usually so close to ambient water pressure that the shock wave pulse appears to have been truncated... 

Wallner lines are formed when sonic waves generated during fracture interact with principal stress driving the propagating crack front. Wallner lines appear as a series of arc shaped steps as shown in Figure 2.33. 

Figure 7b. Scattering of sound by transverse motion of an air microbubble. Both longitudinal (solid line) and shear (dashed line) waves are generated.

The arc temperature profile is appreciably modified in this mode, becoming narrower with appreciably higher peak axis temperatures. More radiation from sodium lines arising from higher excited states and from the continuum results. Disadvantages of this approach are the need for special pulsing circuitry to operate the lamps and specially constructed arc tubes to withstand fracture from the acoustic shock waves generated by the pulses. 

Electricity is generated and transmitted in power lines at a frequency of 60 Hz (1 Hz = 1 cycle per second). Determine the wavelength of the electromagnetic waves generated by the passage of electricity in power lines. 

It can be added that under different conditions that is, different wavelengths, intensities, and exposures, electromagnetie wave generation ean be regarded as a cause of cancer. For example, consider x-rays, microwaves, and power line radiation, not to mention sunlight.)... 

Most Raman-active substances show only one or two Stokes lines at the frequencies cos = cd] — coy in stimulated emission. At higher pump intensities, however, lines at the frequencies 0 = 001 —ncoy (n = l,2, 3), which do not correspond to overtones of vibrational frequencies, have been observed besides these Stokes lines. Because of the anharmonicity of molecular vibrations, the spontaneous Raman lines from vibrational overtones are shifted against n>L by Acu = ncoy — n - -n)xk, where Xk represent the anharmonicity constants. In Fig. 8.12 is illustrated that these higher-order Stokes lines are generated by consecutive Raman processes, induced by the pump wave, the Stokes wave, etc. 

In many applications, the load voltage required must have low harmonic distortion. In some cases, a sine wave with a frequency equal to the utility line supply (60 Hz in North America) is required. In induction motor control applications, the output voltage, as well as frequency, must be controllable. In this case, it is possible to combine both the voltage control and sine wave generation in the inverter itself using sinusoidal PWM. 

Oflier applications Other applications of thin films include pyroelectric detectors and surface acoustic wave (SAW) substrates. The latter devices consist of a piezoelectric substrate onto which interdigital electrodes are deposited, for example by screen printing. An elastic wave generated at the input interdigital transducer (IDT) travels along the surface and is detected by the output interdigital transducer (OIT). These devices are mainly used as delay lines and filters in microwave and television communications (see also Chilla et al., 2003). 

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