In the paper, the issue of the form deviation measurement with coordinate measuring machines is being discussed. As an example, the out-of-cylindricity was taken, and their dependence on the various factors, that affect the final results of measurement and could expand its uncertainty. The supporting expert program Valetz is presented, too. It was designed to simulate the measurement of outof-c...

14 Electron microscopy is a recognized standard tool for nanomaterial characterization, and 15 recommended by the European Food Safety Authority for the size measurement of 16 nanomaterials in food. Despite this, little data have been published assessing the reliability of 17 the method, especially for size measurement of nanomaterials characterized by a broad size 18 distribution and/or added ...

The rigorous uncertainty estimation in Electromagnetic Compatibility (EMC) testing is a complex task that has been addressed through a simplified approach that typically assumes that all the contributions are uncorrelated and symmetric, and combine them in a linear or linearized model using the error propagation law. These assumptions may affect the reliability of test results, and therefore, i...

The evaluation of the measurement uncertainty of a robust all-fiber-based low-coherence interferometer for the measurement of absolute thickness of transparent artifacts is described. The performance of the instrument is evaluated by measuring the length of air-gaps in specially constructed artifacts and the observed measurement errors are discussed in the context of the uncertainty associated ...

This report describes the ‘top-down’ approach to the evaluation of measurement uncertainty in the context of clinical chemistry. The ‘top-down’ approach makes use of information on the performance of whole measurement procedures, such as data obtained from routine internal quality control and external quality assessment. The strengths and weaknesses of the data commonly available to laboratorie...

A computational method for processing measurement data is discussed that applies the law of propagation of uncertainty, which is described in the Guide to the Expression of Uncertainty in Measurement. The method introduces the notion of an ‘uncertain number’, which is an entity that encapsulates information about the value and uncertainty of a quantity. Basic mathematical operations can be defi...