Smallest measurable length & amount of time

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What is the smallest measurable length and amount of time that can be achieved with todays technology ?
 
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What do you mean with "achieved"?? Do you mean: the smallest length that we can observe with a microscope? The smallest length that we can measure? The smallest length of something we can construct??
 
micromass said:
What do you mean with "achieved"?? Do you mean: the smallest length that we can observe with a microscope? The smallest length that we can measure? The smallest length of something we can construct??

Smallest length that can be observed.
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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