. Practical physics. -Plate -Filament-Grid—Filament. Fig. 465. A popular form of vacuum tube used in radio receiving that a current of electricity is a stream of negative elec-trons which, when passing through a vacuum, move withenormous velocity (thousands of miles per second (§ 498)),but when passing along a wire (ordinary conduction) movequite slowly (a few centimeters per second). Now we foundin studying the tungar rectifier (§ 374) that these negativeelectrons escape freely from an incandescent filament undercertain conditions. When the battery B (Fig. 466) has its+ terminal connected to
. Practical physics. -Plate -Filament-Grid—Filament. Fig. 465. A popular form of vacuum tube used in radio receiving that a current of electricity is a stream of negative elec-trons which, when passing through a vacuum, move withenormous velocity (thousands of miles per second (§ 498)),but when passing along a wire (ordinary conduction) movequite slowly (a few centimeters per second). Now we foundin studying the tungar rectifier (§ 374) that these negativeelectrons escape freely from an incandescent filament undercertain conditions. When the battery B (Fig. 466) has its+ terminal connected to tlie plate P of the vacuum tube and 430 INVISIBLE EADIATIONS
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysics, bookyear1922
