Advanced Electrical Measurements |
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Page 193
... heat the leads to a dull red for about five minutes and test again . If two or three treatments of this type do not ... heat con- ductivity and low heat capacity in order to follow changes of temperature rapidly . A typical construction ...
... heat the leads to a dull red for about five minutes and test again . If two or three treatments of this type do not ... heat con- ductivity and low heat capacity in order to follow changes of temperature rapidly . A typical construction ...
Page 204
... of refractory material , surrounded by a thick layer of heat insulat- * Forsythe and Worthing , Astrophysical Journal , Vol . 61 , p . 196 ( 1925 ) . ing material . The heating coils , wound with chromel 204 RADIATION MEASUREMENTS.
... of refractory material , surrounded by a thick layer of heat insulat- * Forsythe and Worthing , Astrophysical Journal , Vol . 61 , p . 196 ( 1925 ) . ing material . The heating coils , wound with chromel 204 RADIATION MEASUREMENTS.
Page 205
... heat losses from the former regions are greatest . For laboratory 2 3 C E + || 5 6 MO Not B D FIG . 100. The black ... heating coils are arranged for separate control and so that the current in each one may be read separately , and a ...
... heat losses from the former regions are greatest . For laboratory 2 3 C E + || 5 6 MO Not B D FIG . 100. The black ... heating coils are arranged for separate control and so that the current in each one may be read separately , and a ...
Contents
CHAPTER IOBSERVATIONAL DATAGRAPHICAL REPRE | 1 |
CHAPTER IIMEASUREMENT OF RESISTANCE | 14 |
Measurement of Specific Resistance | 20 |
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a₁ accuracy adjustment alternating current ammeter ampere amplifier apparatus as shown balance ballistic galvanometer battery black body calibration capacitance cathode centimeter charge circuit coefficient coil compute condenser conductors connected constant correction couple current flowing cycle damping decrease deflection determined dial direct current discharge electrical electrodynamometer electrometer electromotive force electrons electrostatic emission equal equation errors EXPERIMENT filament flux frequency oscillator furnace gauge grid potential heat instrument ions junction known laboratory Leeds and Northrup manometer maximum McLeod Gauge mercury metal method millimeters molecules mutual inductance needle obtained ohms plate current Plot a curve positive potential difference potentiometer precision measure pressure proportional pyrometer quadrants quantity R₁ R₂ radio rheostat sensitivity shown in Fig shunt slide wire solution standard cell standard resistance switch temperature thermocouple torque unit usually V₁ vacuum tube variable velocity voltage voltmeter volts wave length Wheatstone bridge zero