The Uncertainty Principle
Reduce the light intensity
- Sometimes see a flash; sometimes no
- When we see the electron, it doesn’t interfere
- When we don’t see the electron, it interferes
Reduce the light frequency
- Longer frequency light disturbs the electron less
- Photons will have less energy and momentum
- Just as the interference pattern starts appearing…
- The wavelength is so long that we cannot resolve the separation between the flashes
- Wave nature of light limits the resolution