Quantum physics is a field of science that studies tiny particles in the universe, such as atoms, electrons, photons (light particles), and other subatomic particles, including quarks.
In our everyday world, at the scales we can perceive, objects generally obey the laws of classical physics. However, when it comes to the smallest particles, classical physics begins to show its limitations, and the laws of quantum mechanics come into play.
Some of the basic ideas of quantum physics are that particles such as electrons can exhibit wave properties and vice versa (this is called wave-particle duality); two particles can be interconnected such that measuring one instantly gives information about the other (quantum entanglement); and a quantum particle can be in multiple states at once until it is observed (quantum superposition).
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