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Chemistry 7 Online
OpenStudy (anonymous):

how cathode rays were produced in discharge tube?

OpenStudy (anonymous):

When there an electric current indeced, electron move int the discharge tubes, whe nthe electron colide an atom, it make the electron of the atom changed to high energy state, when the electron went bac to normal state, it release energy in form of photon(light).

OpenStudy (anonymous):

http://en.wikipedia.org/wiki/Cathode_ray read it..................

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