The De Broglie Wavelength equation relates wavelength to velocity or speed.
Concept #1: The De Broglie Wavelength Equation
Example #1: Find the wavelength (in nm) of a proton with a speed of 7.33 x 109 . (Mass of a proton = 1.67 x 10-27 kg)
Practice: What is the speed of an electron that has a wavelength of 895 μm? (Mass of an electron = 9.11 x 10 -31 kg)