FIGURE CAPTIONS 
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Small pressure tank with electrical feed-through and optical viewing port closures 
Large pressure tank (4 ft diameter, 8000 psi) showing screw plug and inner plug 
Resistance as a function of pressure 
Pressure sensitivity of carbon composition resistors 
Typical failure of capacitor containing void spaces 
Inductance changes in three types of cores under pressure 
Inductance changes in five types of cores under pressure 
Response of a type 6AL5 vacuum tube to hydrostatic pressure (about 2000 psig) 
Subminiature vacuum tubes subjected to 10,000 psig without mechanical or electrical 
failure 
a. and b, Inside (a) and outside (b) views of optical port for observing objects under 
test in hydrostatic pressure tank 
Transistor under test at 10,000 psig as seen through optical viewing port 
Nickel cadmium battery with pressure equalization 
Glass tubing of various diameter was sealed as illustrated, then subjected to high 
hydrostatic pressures 
Semiconductors subjected to hydrostatic pressure tests (10,000 psig, paraffin oil bath) 
Conduction characteristics of a "passivated" diode under 0 psig and 10, 000 psig 
Resistance of transmission of pressure to a component for two types of epoxies 
Aluminum tube test block 
Pressure tank for long-term test of electronic components 
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