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Reducing Torque Measurement Uncertainty in Turbine Engine Testing | HBM

This is a Digitized Sky Survey image of the oldest star with a well-determined age in our galaxy. The ageing star, catalogued as HD 140283, lies over 190 light-years away. The NASA/ESA Hubble Space Telescope was used to narrow the measurement uncertainty on the star's distance, and this helped to refine the calculation of a more precise age of 14.5 billion years (plus or minus 800 million years).

Heisenberg's uncertainty principle graces every undergraduate quantum physics textbook in the world. But a proof for a key aspect of it - one that encapsulates the uncertainty that measurement introduces into a system - has never been proven directly. That has just changed...