An introduction to uncertainty in measurement using the GUM by L. Kirkup, R. B. Frenkel

By L. Kirkup, R. B. Frenkel

Dimension shapes medical theories, characterises advancements in production procedures and promotes effective trade. In live performance with dimension is uncertainty, and scholars in technological know-how and engineering have to establish and quantify uncertainties within the measurements they make. This publication introduces size and uncertainty to moment and 3rd yr scholars of technological know-how and engineering. Its technique is dependent upon the across the world acknowledged and urged directions for calculating and expressing uncertainty (known through the acronym GUM). The information underpinning the equipment are thought of and labored examples and workouts are unfold in the course of the textual content. specific case reports in accordance with general undergraduate experiments are integrated to augment the rules defined within the booklet. This advisor can be helpful to pros in who're anticipated to understand the modern equipment during this more and more vital zone. extra on-line assets can be found to aid the ebook at www.cambridge.org/9780521605793.

Show description

Read Online or Download An introduction to uncertainty in measurement using the GUM PDF

Similar measurements books

Photo-Excited Charge Collection Spectroscopy: Probing the traps in field-effect transistors

Reliable country field-effect units similar to natural and inorganic-channel thin-film transistors (TFTs) were anticipated to advertise advances in exhibit and sensor electronics. The operational stabilities of such TFTs are hence vital, strongly reckoning on the character and density of cost traps current on the channel/dielectric interface or within the thin-film channel itself.

Beam-Wave Interaction in Periodic and Quasi-Periodic Structures

The most subject matter of this booklet is the interplay of electrons with electromagnetic waves within the presence of periodic and quasi-periodic buildings in vacuum, in view of functions within the layout and operation of particle accelerators. the 1st a part of the ebook is worried with the textbook-like presentation of the fundamental fabric, specifically reviewing straight forward electromagnetic phenomena and electron dynamics.

Observation of the Earth and its Environment: Survey of Missions and Sensors

This publication is set spaceborne missions and tools. moreover, surveys of airborne missions and of campaigns are available at the accompanying CD-ROM in pdf-format. in comparison with the third variation the spaceborne half grew from approximately three hundred to one thousand pages. the full textual content - together with the electronic-only chapters - includes greater than 1900 pages.

Measuring Signal Generators: Theory & Design

The e-book brings jointly the subsequent issues:Theory of deterministic, random and discrete signs reproducible in oscillatory structures of generators;Generation of periodic indications with a specific spectrum, harmonic distortion issue and random signs with particular chance density functionality and spectral density;Synthesis of oscillatory approach structures;Analysis of oscillatory structures with non-linear components and oscillation amplitude stabilization systems;It considers the stipulations and standards of steady-state modes in sign turbines on lively four-pole components with unidirectional and bidirectional transmission of indications and on two-pole parts; analogues of Barkhausen criteria;Optimization of oscillatory process constructions through harmonic distortion point, minimization of a frequency blunders and set-up time of the regular country mode;Theory of building of random sign generators;Construction of discrete and electronic sign generators;Practical layout of major devices of generators;Practical block diagrams of either analog and electronic sign turbines.

Additional resources for An introduction to uncertainty in measurement using the GUM

Sample text

The other method of identifying a systematic error is by changing the experimental set-up. The change may be intentional in order to seek out any systematic error, or may occur for other reasons, with the systematic error being discovered ‘by accident’ as a result of the change. The change may also take place as a slow natural process, generating an increasing and significant systematic error, which, however, remains unsuspected for a prolonged period. In high-accuracy electrical measurements, the slow deterioration in the insulating property of materials, permitting increasing leakage currents, is such a process.

4 s. 7%). 382 353 m/s. 7%. 4 m/s. Rule 3 When numbers are added or subtracted, quote the answer to the number of significant digits that implies a proportional uncertainty closest to the greater of the component proportional uncertainties. 0158 kg. 003%. 08% and is the higher of the two proportional uncertainties. 08%. 5% 5 parts in 100 or 5%. 016 kg. Rule 4 When a quantity with proportional uncertainty p is raised to the power n, the resultant proportional uncertainty is |np| and the quoted number of significant figures should reflect this.

1, we are likely to observe a scatter of random errors around the ‘line of best fit’ that gives us the temperature coefficient of resistance. In this example, the resistor has a ‘nominal’ value of 1500 and is wound from a special type of wire with a very low temperature coefficient. Several measurements have been taken at each of four selected temperatures. 59 µ / . A sequence of reasonably stable measurements suggests a possible general way in which we might obtain the true value of a measurand. We make as many measurements as possible under the same conditions and calculate their mean.

Download PDF sample

Rated 4.90 of 5 – based on 46 votes