Scientists finally solve a century-old quantum mystery

A Vermont research team has cracked a 90-year-old puzzle, creating a quantum version of the damped harmonic oscillator. By reformulating Lamb’s classical model, they showed how atomic vibrations can be fully described while preserving quantum uncertainty. The discovery could fuel next-generation precision tools.

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The True Meaning of Schrödinger's Equation

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If you drive a (damped) harmonic oscillator at low frequency, the oscillations will follow the forcing. If the frequency increases the oscillations will start lagging behind, and (if you drive it with a frequency higher than the resonant frequency of the oscillator) they will be exactly out of phase with the forcing.
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