Question

Why is the photoelectric effect so signifigant?

Answer 1

because it demonstrates the quantized nature of light, and its particle like property.

Answer 2

So the double slit experiment was performed after the photoelectric effect was discovered? So they were sure that light is both a particle and a wave?

Answer 3

No, Youngs experiment was much earlier, 1801.

The photoelectric effect was first observed around 1887.

Answer 4

Oh, who observed the photoelectric effect?

Answer 5

http://en.wikipedia.org/wiki/Photoelectric_effect

Answer 6

Thanks