Wave-particle duality

1. Apr 4, 2005

gschjetne

This is one of the options I've found for IB extended essay topic.
I would like to investigate and confirm the wave-particle duality of light.

As an experiment to prove the wave nature I will shine a laser beam through a narrow slit, and use Heisenberg's Uncertainty Principle, $\Delta p \Delta x \geq \hbar$

I will change the size of the slit, delta X, and measure the size of the smear when projected at lenght L, according to
$$X_L = \frac{\frac{\hbar}{\Delta x}}{\frac{h}{\lambda}}L$$

To prove the wave nature of light, I'm thinking of doing Young's double-slit experiment, but I have some trouble finding out what to look for. I need an independent and a dependent variable, any suggestions?

2. Apr 6, 2005

gschjetne

My ohysics teacher told me that I couldn't do two separate experiments to prove wave-particle duality, it had to be one single experiment.

So I guess never mind about the above question