B What is the shortest wavelength of all? >0 or h?

1. Apr 25, 2017

Daniel Petka

Theoretically of course, what is the shortest wavelength of all? Is it the size of the Planck's constant or just anything over zero?

2. Apr 25, 2017

newjerseyrunner

Depends on what framework you are working with. Quantum mechanics has a minimum limit, which is the Planck length, General Relativity has smooth space and infinitely divisible energy, so gravity waves can be any size (theoretically.)

3. Apr 25, 2017

Drakkith

Staff Emeritus
There is no minimum wavelength. Not even the Planck length. In the frame of reference of an observer traveling at a high velocity opposite the direction the wave is traveling, the wave would have a significantly shorter wavelength.

4. Apr 26, 2017

hilbert2

You should not confuse the Planck length (which has units of distance) with Planck constant (which has units of angular momentum).

5. Apr 29, 2017

Daniel Petka

With De Broglie's formula a fast moving heavy particle would have a wavelength smaller than Plank's length. (yeah not constant :p)