"Thirty-one years ago, Dick Feynman told me about his 'sum over histories' version of quantum mechanics. 'The electron does anything it likes,' he said. 'It just goes in any direction at any speed, forward or backward in time, however it likes, and then you add up the amplitudes and it gives you the wave-function.' I said to him, 'You're crazy.' But he wasn't."
-Freeman J. Dyson, 1983
That's the best answer we can give. What happens is that the electron is both a particle and a wave, just like photons are both a particle and a wave. The character that shows itself depends on what type of experiment is being performed. In the case of a double slit experiment, the wave character will show. In the case of say... measuring quantization of charge with an oil drop experiment, the particle nature will be more readily apparent.
The deBroglie wavelength is the simplest connection in the wave-particle duality relationship. It says of a particle that:
wavelength = h / momentum
where h is Planck's constant.
affans05
2008-02-15 20:57:36 UTC
wow this is touch. I have never heard of an electron that behaves like light when subjected to youngs double slit experiment.
im 99% sure this has to do with quantum physics.
T M
2008-02-15 20:57:31 UTC
oh please...it takes more than a paragraph to explain that.
See the chapter in the classic text "Feynman Lectures on Physics" about the double slit experiment.
anonymous
2016-10-25 03:24:15 UTC
Diffraction and interference reveal the wavelike nature of an entity, be it a mild beam or an electron beam. the point is that in basic terms as mild has wavelike (mild-wave) and particle-like (photon) residences, so do electrons have particle-like and wavelike residences. Einstein grow to be the first to describe that mild had particulate residences (as considered in the photoelectric result); de Broglie grow to be the first to reveal that electrons (and different issues we in many cases imagine of as debris) have wavelike residences. at the same time as he first proposed it he grow to be a grad student, and his profs idea he grow to be somewhat out of his ideas. luckily for him, Einstein visited and today said the knowledge and the symmetry in his arguments. The experimental data got here many years later, in the Davisson-Germer and different experiments.
sathya n
2008-02-15 20:59:18 UTC
Electrrons are dual in nature. This theory was confirmed by Einstein.So in larger frequency region ,where mass is negligible it behaves as a wave.In lower frequency region it behaves as a matter.
ⓘ
This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.