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because excite of gaseous atoms emit photons .
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Why crook tube is called discharge tube?
If it's a *Crookes* tube you're asking about, it's a discharge tube because the applied electrical field causes ionization and a resulting discharge of energy in the form (mostly) of light, depending on the gas or gases in the tube.
What color does a helium filled tube glow when electiricity is passed through?
Here is a website that will help you out with Helium as well as other gasses that emit colours when in a glass tube with electricity running through at the related link.
Ionization of gas in the discharge tube?
yes
Does a mass of a glow stick change when it lights?
Yes because it glows when it glows the tube expands to create space for it to glow
What are the consequences of discharge tube?
Ddischarge tube led to the discovery of Cathode rays (electrons) and Positive rays (protons) so this discovery of cathode rays and positive rays can be considered as conse quences of discharge tube.
What do cathode produce on the walls of the discharge tube?
greenish glow or fluorescence
Why discharge tube appears dark at very low pressure?
Not enough gas to support ionization.
Does the tube light glow with out starter and choke?
it will not glow
How discharge tube is different from tube light?
discharge tube can be used for indentifying electrons while tube light cxannot
How does fluorescent work?
Fluorescent lights glow because of an electric discharge in a glass tube that causes mercury atoms to emit ultraviolet light. The inside of the tube is coated with phosphor, which absorbs the ultraviolet light and then re-emits visible light.
Why crook tube is called discharge tube?
If it's a *Crookes* tube you're asking about, it's a discharge tube because the applied electrical field causes ionization and a resulting discharge of energy in the form (mostly) of light, depending on the gas or gases in the tube.
What color does a helium filled tube glow when electiricity is passed through?
Here is a website that will help you out with Helium as well as other gasses that emit colours when in a glass tube with electricity running through at the related link.
Ionization of gas in the discharge tube?
yes
Why do luminous object glow in the dark only?
They glow even during day but the intensity of its light is negligibly small compared to that of sun.So it appears that it does not glow
What mysterious lightning appears to glow and float?
ball
Does a mass of a glow stick change when it lights?
Yes because it glows when it glows the tube expands to create space for it to glow
What is blue gas?
argon is blue in discharge tube
