A quantified expression of the doubt associated with a measurement result, considering instrument, method, operator, environment, resolution, calibration, and other influences.
GlassRenu · Educational illustration
Meaning and boundaries
Uncertainty is not the same as a mistake, tolerance, or vague lack of confidence, and a displayed digit is not proof of that resolution in use.
Why it matters in glass restoration
Depth, thickness, distance, temperature, and distortion decisions can be unsafe or misleading if their uncertainty is ignored.
Related terms
References
- National Institute of Standards and Technology — NIST TN 1297: Guidelines for Evaluating and Expressing Measurement Uncertainty
Publisher’s original source - National Institute of Standards and Technology — NIST TN 1297 Appendix D1: Terminology
Publisher’s original source - NIST/SEMATECH — Engineering Statistics Handbook: Measurement Process Characterization
Publisher’s original source