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Figures (10)

Fig. 1
Fig. 1

Quick-change filter holder contains an interlocking mechanism that prevents the simultaneous removal of both the dark slide and the filter drawer.

Fig. 2
Fig. 2

Holographic interferogram is formed on the photographic plate by the interference between the object and reference beams. Double-exposure interferograms taken with the blade rotating and stationary at various positions are processed to reconstruct mathematically the airflow about the blade.

Fig. 3
Fig. 3

Split fiber-optic bundle mixes the light from a broadband dye laser and a spectral lamp.

Fig. 4
Fig. 4

In the image method an antenna is placed facing its image in a reflecting plane. The power transmitted by the antenna and the portion of the transmitted power received by the antenna after reflection from the plane are measured at various distances R.

Fig. 5
Fig. 5

Old and new anemometers are compared. Modifications in the new version include the addition of the temperature-compensation resistor and resistors R s and R p in series and parallel with the compensation device.

Fig. 6
Fig. 6

This modified freezer is used to calibrate standard platinum resistance thermometers.

Fig. 7
Fig. 7

Vibrating at an ultrasonic frequency, a piezoelectric driver sets up vortices that transfer heat to or from an object in the space, depending on whether the reflector is heated or cooled.

Fig. 8
Fig. 8

Anode contact finger forms a bridge over the channel from which material has been removed to reduce the parasitic shunt capacitance. The device is made by standard processing techniques that readily accommodate changes of design.

Fig. 9
Fig. 9

Ceramic beads would electrically insulate a copper conductor from a sheath of copper tape.

Fig. 10
Fig. 10

This graphite/epoxy composite heater was developed to prevent and reverse the formation of ice on advanced composite surfaces of aircraft.

Equations (2)

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Γ - 2 = 8 π R / G λ ,
Γ - Γ o - 1 = 8 π R / G λ ( 1 - Γ o 2 ) ,

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