*Momentum* is a fundamental physical quantity that represents the product of the mass and the velocity of an object ($p = m \cdot v$) and characterizes its state of motion. In [[Classical Mechanics|classical mechanics]], momentum is a [[Vector|vector]] quantity that describes both the direction and magnitude of the motion of a body, and in a closed system without external influences, the total momentum is conserved. In [[Quantum Mechanics|quantum mechanics]], *momentum* also describes the motion of particles such as [[Photon|photons]] and atoms, with the [[De Broglie Wavelength|de Broglie wavelength]] of a particle being inversely proportional to its momentum, combining the [[Wave-Particle Duality|dual wave and particle]] properties at the microscopic level. You found an empty entry. We are still working on this part. Please come back later. >[!read]- Further Reading >- [[Classical Physics]] >- [[Classical Mechanics]] >[!ref]- References