Wave Particle Duality

Light behaves as a particle in the photoelectric experiment, but it behaves as a wave in diffraction/interference of light.

For particles, there are also particle and wave properties.

You can calculate the wavelength of a particle by using $\lambda = \frac{h}{p}$

Derivation of the above equation:

Using E=mc2 and E=hf,

$$\begin{aligned} mc^{2} &= hf \\ mc &= \frac{hf}{c} \end{aligned}$$

Momentum of a photon is p = mc, hence $p = \frac{hf}{c}$.

$$\begin{aligned} p &= \frac{hf}{c} \\ &= \frac{h}{\lambda} \end{aligned}$$

It has been shown experimentally that electron undergoes diffraction when directed through a thin metal foil.

It has been found that both the wave and particle aspects cannot be revealed simultaneously in a single experiment.

Back To Quantum Physics And Lasers (A Level Physics)

Back To A Level Physics Topic List

Mini Physics

As the Administrator of Mini Physics, I possess a BSc. (Hons) in Physics. I am committed to ensuring the accuracy and quality of the content on this site. If you encounter any inaccuracies or have suggestions for enhancements, I encourage you to contact us. Your support and feedback are invaluable to us. If you appreciate the resources available on this site, kindly consider recommending Mini Physics to your friends. Together, we can foster a community passionate about Physics and continuous learning.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.