The formula applies regardless of the units. You just have to use consistent units. If you use MKS, the energy is measured in Joules (m^2kg/sec^2), c is in m/sec, distance in m and h in Jsec. A nanometer is [itex]10^{-9} metres[/itex].Jchem said:
MKS is metre-kilogram-seconds or SI units (Système International d'Unités) as opposed to CGS (=centimetre-gram-seconds) or FPS (=foot pound seconds).DieCommie said:
The energy of a light quantum, also known as a photon, is determined by its frequency or wavelength. The higher the frequency or shorter the wavelength, the greater the energy of the photon.
The color of light is determined by its wavelength, and therefore, the energy of a light quantum. Shorter wavelengths correspond to higher energy photons, which are perceived as blue or violet light. Longer wavelengths correspond to lower energy photons, which are perceived as red or orange light.
The energy of a light quantum is quantized, meaning it can only exist at certain discrete energy levels. This is due to the wave-particle duality of light, where it exhibits both wave-like and particle-like behavior.
The energy of a light quantum determines its behavior and interactions with matter. Higher energy photons have a greater ability to penetrate and interact with matter, while lower energy photons may be absorbed or reflected more easily.
The energy of a light quantum can be calculated using the equation E = hf, where E is energy, h is Planck's constant (6.626 x 10^-34 joule seconds), and f is frequency. This equation is known as the Planck-Einstein relation.