- Quantum superposition principle: This is a key principle of quantum mechanics that holds that any two (or more) quantum states can be added together (“superposed”) and the result will be another valid quantum state. An example of this is Schrödinger’s cat, a thought experiment in which a cat is simultaneously both alive and dead, a superposition of states, until observed.
- Heisenberg’s uncertainty principle: Another central concept in quantum mechanics is Heisenberg’s uncertainty principle. This principle states that it is impossible to simultaneously measure the exact position and momentum of a particle. The more precisely one quantity is measured, the less precisely the other can be known.
Image by Gerd Altmann from Pixabay
