Particles behave differently at quantum level from "summary" of The Quantum Universe by Brian Cox,Jeff Forshaw
At the quantum level, particles exhibit behaviors that are fundamentally different from the familiar world of classical physics. These differences arise due to the principles of quantum mechanics, which govern the behavior of particles at the smallest scales. One key aspect of quantum mechanics is the concept of superposition, which states that particles can exist in multiple states simultaneously until they are observed or measured. This means that a particle such as an electron can be in two places at once, or have two different values of a property like spin, until it is interacted with in some way. Another important concept in quantum mechanics is the idea of wave-particle duality. This principle suggests that particles, such as electrons or photons, can exhibit both wave-like and particle-like behaviors depending on the experimental setup. For example, in the famous double-slit experiment, electrons behave like waves when not observed, creating an interference pattern on a screen. However, when a detector is used to observe which slit the electron passes through, it behaves like a particle, creating a simpler pattern on the screen. Quantum entanglement is another phenomenon that sets particles apart at the quantum level. When two particles become entangled, their properties become interconnected, regardless of the distance between them. This means that me...
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