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Figures (7)

Fig. 1
Fig. 1

Electronically controlled matrix of shutters switches signals from input channels on quartz wafers to output channels on other quartz wafers stacked perpendicularly.

Fig. 2
Fig. 2

Quantum well double-barrier diodes fabricated on a GaAs chip. Each diode is a mesa-shaped structure 4 μm in diameter. The electrical parameters of each diode are series resistance = 15 Ω, capacitance = 15 fF, and cutoff frequency = 730 GHz.

Fig. 3
Fig. 3

This smart limiter is an active EO shutter that protects a sensor against an excessively bright laser beam. Because the shutter includes a spectrometer, it is not necessary to know the wavelength of the laser light in advance.

Fig. 4
Fig. 4

Test operator uses handles on threaded retaining rings to attach or remove the top or bottom plates that seal the combustion chamber.

Fig. 5
Fig. 5

Radial profilometer inserted in a pipe or other cavity to measure its shape optically. Illumination is supplied through an optical fiber, and the image of the inspected area of the cavity is transmitted through a bundle of optical fibers.

Fig. 6
Fig. 6

Holographic reticle, placed on the specimen, produces virtual images of reticles of various depths into specimen.

Fig. 7
Fig. 7

In a 2-D problem with equally spaced grid points, an equal number (fifteen) of particles is assigned to each of eight subdomains of different sizes. The computations for the particles in each subdomain are assigned to one of eight concurrent (parallel) processors.

Equations (3)

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V π = λ / 2 n 3 r ,
f ( x ) - f ( b ) K x - b ,
σ = lim t t - 1 ln ( / 0 )

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