accurate? For example they know have these digital scales out know that they say are more accurate, (I kinda like those ones -they weigh me less) but how do they know what is really accurate?
A few years ago, a town in my state set a record for cold. Then later, the powers that be, said the thermometer wasn't accurate. How do they know what is accurate? I mean where is it written?
2007-03-18 12:20:06 · 3 answers · asked by Mrs J 6 in Science & Mathematics ➔ Other - Science
Things that measure have to be calibrated to a known 'standard' unit, that is, must meet specific requirements of norm or specifications. Most standards were set long ago like 1 inch or 1 degree of angle or temperature, 1 foot or 1 mile, 1 volt or 1 amp. Etc. SAE and Metric are two standards.
2007-03-18 12:35:11 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Measurement standards are defined by meetings of the General Conference on Weights and Measures, and maintained by the International Committee for Weights and Measures. In addition, various national and regional bodies oversee these standards; in the US that organization is the National Institute of Standards and Technology (NIST). They are responsible for certifying that the methods used at various calibration labs conform to the standards.
2007-03-18 13:51:00 · answer #2 · answered by injanier 7 · 0⤊ 0⤋
'Accuracy' is a science within itself. Only the top honchos in the scientific world can measure to the closest accuracy of anything! They've got all the tools. Mind you it took genius and mental stamina(they've got it) to 'create' these 'tools'. I'm using one right now!
2007-03-18 12:37:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋