Velocity Measurement in Quantum Mechanics

facenian · Dec 12, 2011

How can velocity be measured in quantum mechanics since one can not measeure position without disturbing the particle?

Simon Bridge · Dec 12, 2011

You have to be clever.

You can get momentum from a collision.

You can rig a detector to intercept part of a whole bunch of particles, then do it again in a different place, and use the time between them. You don't get the speed of the particular particles detected but you do get the speed of the bunch.

You can pass a beam through rotating collimators like you do to measure the speed of light.

Short answer: lots of ways.

Velocity Measurement in Quantum Mechanics

High School Interesting paper on QM in Scientific American

Undergrad ##r-##independent angular momentum in quantum mechanics

High School Seemingly odd quantum tunneling

Graduate Exact symmetry, quantum states, and symmetric dynamics

Undergrad What empirical observation supports the axiom of continuous spacetime?

Graduate Avalanche photon detectors

Undergrad A Dataset & Signal Analysis Interpretation of Quantum Mechanics

High School Two/three photon absorption chemical substance producing photons for electricity generation

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

Velocity Measurement in Quantum Mechanics

Similar threads