Question

What are some examples of the Planck's constant?

Answer 1

You mean...of the use of it?

1] Energy `E` of a Photon of frequency `nu`:
`E=h*nu`
2] DeBroglie wavelength `lambda` for a "wavicle" (matter wave) of momentum `p`:
`lambda=h/p`;
3] Heisenberg Uncertainty Principle: relating the uncertainties in the values of position `x` and momentum `p` of a particle (microscopically);
`DeltaxDeltap>=h/(2pi)`