Discharge tube phenomenaElectric discharge tube.

Air at low pressure

- +Highvoltage supply

To vacuum pump

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 20 mm Hg Violet streamers

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anodecathode

Pressure = 5 mm Hg Pink positive column

F D SFDS

Blue negativeglow

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink positive column

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink positive column

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink positive column

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.05 mm Hg Pink striations

C D S FDS

Blue negativeglow

C D S

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space

Electric discharge tube

Anode glowCathode glow

Pressure = 0.01mm Hg

or less

Glass glows green fluorescence

C D SCathode rays Crookes dark space