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Brandy asked in Science & MathematicsPhysics · 10 months ago

William Crookes beam was called a cathode ray because.....? Please choose from an answer below?

it seemed to leave the cathode and travel to the anode.

it seemed to travel from the zinc sulfide screen to the cathode.

it seemed to travel from the zinc sulfide screen to the anode.

it seemed to leave the anode and travel to the cathode.

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  • Anonymous
    10 months ago
    Favorite Answer

    It seemed the beam to leave the cathode and travel to the anode.

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  • Ash
    Lv 7
    10 months ago

    it seemed to leave the cathode and travel to the anode.

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  • 10 months ago

    First, what do you mean by 'it'? WHAT seemed to travel from a to b?

    In vacuum tubes, electrons travel through space inside the tube. They travel from the cathode (negative) the anode (positive). In a cathode ray tube there's not really a 'ray', just a narrow stream of electrons (sometimes also called an 'electron beam'). It's steered by electromagnets and lands on a phosphor-coated anode.

    So the first one is what you want, 'it' being electrons.

    • Brandy10 months agoReport

      William Crookes passed an electric current through a tightly sealed tube. The current generated a green beam of light (due to fluorescence as the beam struck a zinc sulfide surface) which seemed to pass from one electrode to the other.

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