Question

Elements like Caesium loose their electron when exposed to sunlight due to photoelectric effect can we use this to charge ?

Answer 1

Explanation:

The Photoelectric Effect

This topic is so important, it deserves its own note set.

In 1887, Heinrich Hertz discovered that certain metals emit electrons when is incident on them. This was

the first instance of light interacting with matter, so it was very mysterious. In 1905 Albert Einstein, a 3rd Class

Technical Expert in the Swiss Patent Office and a bureaucrat, published a paper which provided the

explanation for the effect - light is made up of small particles.

Surface electrons are bound to metals with a small amount of energy. Some of the incident photons enter the

surface, collide with atoms of the metal and are totally absorbed. They give their energy to an electron, which,

if the absorbed energy was great enough, then break free from the atom. The photoelectric effect is the result

of collisions between photons and electrons that knock the electrons out of the metal.

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