state two parameters for expressing result of one experiment?
Answers
Answer:
Experimental and uncertainties
Explanation:
No physical quantity can be measured with perfect certainty; there are always errors in
any easurement. This means that if we measure some quantity and, then, repeat the
measurement, we will almost certainly measure a different value the second time. How, then,
can we know the ìtrueî value of a physical quantity? The short answer is that we canít.
However, as we take greater care in our measurements and apply ever more refined experimental
methods, we can reduce the errors and, thereby, gain greater confidence that our measurements
approximate ever more closely the true value.
ìError analysisî is the study of uncertainties in physical measurements, and a complete
description of error analysis would require much more time and space than we have in this
course. However, by taking the time to learn some basic principles of error analysis, we can:
1) Understand how to measure experimental error,
2) Understand the types and sources of experimental errors,
3) Clearly and correctly report measurements and the uncertainties in those
measurements, and
4) Design experimental methods and techniques and improve our measurement skills to
reduce experimental errors