Why do we need quantum mechanics?

In the case of subatomic particles, for example, it is simply impossible to describe the “exact” movement and behavior, one can observe, using the laws of classical mechanics. To do this, you need the laws of quantum mechanics. If you want to describe the movement of a ball, rolling down a hill, you can use classical mechanics, it works fine. read more

Quantum mechanics is the body of scientific laws that describe the wacky behavior of photons, electrons and the other particles that make up the universe. Credit: agsandrew | Shutterstock Quantum mechanics is the branch of physics relating to the very small. read more

Classical mechanics is the study of the motion of everyday objects in accordance with the general principles first developed by Newton with later modifications by Einstein. Quantum mechanics is a set of mathematical principles that attempts to explain the behavior of atoms and sub-atomic particles. read more