Quantum theory

Quantum mechanics can be challenging to comprehend due to its foundation on postulates about wave functions that are hard to relate to. Furthermore, quantum particles do not adhere to classical laws, making it challenging to predict their behavior.

Quantum mechanics - Wikipedia

Quantum theory, and the world of subatomic particles and forces it describes, has a daunting reputation for strangeness. And yet, with the right guidance, anyone can enjoy its many wonders

Special relativity: It's like normal relativity, but special.

Schrodinger's Cat is a thought experiment created in 1935 by a brilliant scientist who loved quantum physics and hated cats.

Quantum mechanics, or quantum physics, is the body of scientific laws that describe the wacky behavior of photons, electrons and the other subatomic particles that make up the universe.