what is quantum physics plz tell me
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a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents.
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The central idea of quantum mechanics is that a particle can exist in a state where it doesn't have a well defined value for properties like position, momentum, and energy that we normally think of as being properties of objects we observe on a daily basis.
Rather, our best possible description of the particle involves a mathematical object called a "wavefunction." The basic idea behind the wavefunction is that it tells that, if we were to measure say the position, we would get certain values with certain probabilities. It tells how how the dice are loaded. Quantum mechanics tells how how those probabilities change over time. But when we make those measurements, even if we know the probabilities, quantum mechanics says that it's truly random what outcome we're going to get.
What's really interesting is that certain pairs of properties of a particle cannot both be measured at the same time. Most famously, position and momentum are one such pair. If I know really well where a particle is, there's a limit to how well I can know how fast its moving. This is the basis behind Heisenberg's Uncertainty Principle.
Rather, our best possible description of the particle involves a mathematical object called a "wavefunction." The basic idea behind the wavefunction is that it tells that, if we were to measure say the position, we would get certain values with certain probabilities. It tells how how the dice are loaded. Quantum mechanics tells how how those probabilities change over time. But when we make those measurements, even if we know the probabilities, quantum mechanics says that it's truly random what outcome we're going to get.
What's really interesting is that certain pairs of properties of a particle cannot both be measured at the same time. Most famously, position and momentum are one such pair. If I know really well where a particle is, there's a limit to how well I can know how fast its moving. This is the basis behind Heisenberg's Uncertainty Principle.
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