- #1
johng23
- 294
- 1
I'm probably doing something stupid here...
A wave travels from a medium into a second medium with a smaller refractive index. By definition the speed of the wave increases. Then lambda*f = v, so the wavelength also increases. According to de Broglie, this means the momentum goes down. But how can momentum go down if the wave is moving faster?
A wave travels from a medium into a second medium with a smaller refractive index. By definition the speed of the wave increases. Then lambda*f = v, so the wavelength also increases. According to de Broglie, this means the momentum goes down. But how can momentum go down if the wave is moving faster?