Physics
Compton Wavelength
Quick fact
The Compton wavelength of an electron is about 2.4 picometers, a tiny but measurable shift in light's wavelength during collisions with matter.
Why this is interesting
Did you know that when X-rays hit electrons, they don't just pass through—they actually change their wavelength? This phenomenon is called Compton scattering.
Read the full explanation
Understanding Compton Wavelength
Imagine shining X-rays on a piece of metal. Instead of just bouncing off, the X-ray photons collide with electrons and lose some energy. This loss changes their wavelength—a phenomenon first discovered by Arthur Compton. It shows that light isn't just waves but also behaves like particles called photons.
A deeper explanation
The Compton wavelength is a direct result of quantum mechanics. When a photon collides with an electron, it transfers some momentum and energy to the electron, causing its wavelength to increase. This shift is inversely proportional to the photon's initial energy and depends on the mass of the particle involved. The Compton effect provides experimental proof of the dual nature of light and has been crucial in developing quantum theory.