Explain the wave - particle duality

If electrons are fired through a thin piece of graphite towards a screen an interference pattern forms.We can explain this by thinking of the electrons as having a wavelength, called the de Broglie wavelength. Electrons can be calculated to have wavelengths comparable to the spacing between the atoms in the graphite. As such, it diffracts on passing between atoms and interferes with itself.It is important to highlight that each individual electron lands in one place and this pattern emerges when many electrons are fired through. This, and other compelling evidence, suggests it is better to think of these waves as probability waves, not anything physically real.

Related Physics A Level answers

All answers ▸

What is the optimum angle to throw a snowball for maximum horizontal displacement? (Ignore air resistance, assume the snowball is thrown level with the ground. The angle is measured from the ground up)


How would you explain general relativity?


"An inclined plane at an angle of 25 degrees to the horizontal has a pulley at its top. A 30kg block on the plane is connected to a freely hanging 20kg block by means of a cord passing over the pulley. From rest how far will the 20kg block fall in 2s?


Difference between compression ignition engine and a spark ignition engine


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences