What is the photoelectric effect?
When UV radiation is shone onto zinc, electrons were emitted from the surface
of the metal. This is the photoelectric effect.
The photoelectric effect occurs when electromagnetic radiation incident on the
surface of a metal causes electrons to be emitted
What is the gold leaf experiment?
The gold leaf experiment can demonstrate the photoelectric effect.
Touching the top plate with the negative electrode from a high-voltage power
supply will charge the electroscope. Excess electrons are deposited onto the
plate and stem of the electroscope. Any charge developed on the plate at the
top of the electroscope spreads it to the stem and the gold leaf. As both the
stem and the gold leaf have the same charge, they repel each other, and the
leaf lift away from the stem. If a clean piece of zinc is placed on top of a
negatively charged electroscope and UV radiation shines onto the zinc surface,
then the gold leaf falls slowly back towards the stem
When UV radiation is shone onto zinc, electrons were emitted from the surface
of the metal. This is the photoelectric effect.
The photoelectric effect occurs when electromagnetic radiation incident on the
surface of a metal causes electrons to be emitted
What is the gold leaf experiment?
The gold leaf experiment can demonstrate the photoelectric effect.
Touching the top plate with the negative electrode from a high-voltage power
supply will charge the electroscope. Excess electrons are deposited onto the
plate and stem of the electroscope. Any charge developed on the plate at the
top of the electroscope spreads it to the stem and the gold leaf. As both the
stem and the gold leaf have the same charge, they repel each other, and the
leaf lift away from the stem. If a clean piece of zinc is placed on top of a
negatively charged electroscope and UV radiation shines onto the zinc surface,
then the gold leaf falls slowly back towards the stem
