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برق و الکترونیک::
ژرمانیوم
The optical window may be constructed from germanium, indium arsenide, silicon, sapphire or any other material with a high transmission over a limited wavelength, the wavelength being chosen to match that of the radiation being measured.
-a germanium lens was LU overcome the spherical aoerrauon
, "Electrical Oscillations in Thermistors and Germanium Point-Contact Rectifiers", J.
Doping of the original vanadium dioxide film with 2% germanium lowers the transition temperature of the resulting V305 film to about 120-C.
A requirement, therefore, exists for thermistor materials which possess a lower sensitivity to temperature variations and elemental semiconductors such as germanium and silicon would appear ideally suited to fulfil this requirement.
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