Wired

Measurement and Uncertainty - an example

I previously talked about measurements (some) when I looked at the uncertainty in the distance to the Sun. One of the simple ways of determining the uncertainty of a calculated quantity is to use the ...
AZOM

Using GUM to Calculate Measurement Uncertainty

The technique which is recommended by the regulatory bodies ISO (International Organisation for Standardisation) and BIPM (Bureau International des Poids et Mesures) is one of the most comprehensive ...
AZOM

Uncertainty Versus Accuracy in Measurement

Accuracy is a desirable aspect which is conceptually well defined. There are some definitions available for ‘accurate measurement’ in the ISO vocabulary of metrology terms. According to them, a ...
Nature

Experimental demonstration of a universally valid error–disturbance uncertainty relation in spin measurements

The uncertainty principle generally prohibits simultaneous measurements of certain pairs of observables and forms the basis of indeterminacy in quantum mechanics 1. Heisenberg’s original formulation, ...
Scientific American

Common Interpretation of Heisenberg's Uncertainty Principle Is Proved False

Contrary to what many students are taught, quantum uncertainty may not always be in the eye of the beholder. A new experiment shows that measuring a quantum system does not necessarily introduce ...