What are Matter Waves?

Matter wave, also called De Broglie wave, is a function of probability wave. Its modulus refers to the probability density that may occur at a point in space at a certain moment. The probability density is governed by the law of fluctuations. Quantum mechanics believes that a micro-particle has no definite position. When it is not measured, it is possible to appear anywhere. Once measured, one of its eigenvalues is the observed position. Other observable measurements also show a distribution, and one of the eigenvalues is obtained during observation. The material wave behaves as the expected value of the probability wave function on the macro scale, and the uncertainty failure is negligible.

Matter wave

in Germany

In the light has

After discovering the volatility of micro-particles such as electrons and protons, the understanding of the micro-world is unified. Not only the light originally thought to be electromagnetic waves have particle properties, but also the electrons, protons, etc. originally thought to be particles also have wave properties. Of course, it should be pointed out that although all microscopic particles have wave-particle duality, there are still fundamental differences between photons and particles such as electrons and protons. Photons have no static mass, and electrons and protons all have static mass. The speed of photons is always c, but electrons, protons, etc. can have different speeds of motion that are lower than the speed of light c.