Which of these does Planck's constant depend on?
1 Answer
Aug 18, 2017
Which what? Well, Planck's constant is... constant. So it should not depend on any variable. It is:
#h = 6.62607004 xx 10^(-34) "J"cdot"s"#
Common equations where you would see Planck's constant are:
#E_"photon" = hnu = (hc)/lambda# ,#" "# (Planck-Einstein Relation)
the energy of a single photon based on its frequency
#nu# .#c = 2.99792458 xx 10^(8) "m/s"# is the speed of light and#lambda# is its wavelength in#"m"# .
#lambda = h/p = h/(mv)# ,#" "# (de Broglie Relation)
the wavelength of a particle with a mass
#m# and velocity#v# .#p = mv# is its linear momentum.
#DeltaxDeltap >= ℏ/2# ,#" "# (Heisenberg Uncertainty Principle)
where
#ℏ = h//2pi# is the reduced Planck's constant.
