In prehistoric times, not much needed to be measured. You ate what you found and lived where you could. The advent of agriculture and civilization, however, necessitated a way for people to measure ...

I was at the supermarket recently when I took note of something my eyes had passed thousands of times before. The cans of my favorite sodas were 12 ounces, while the bottles were 2 liters. It caught ...

Why is calibration important? How calibration techniques have changed over time. A timeline showing the evolution of calibration from the beginning would have to start hundreds of years ago (Fig. 1).

Those of us here in the United States are used to measuring various physical attributes with the imperial measurement system, which includes feet, inches, gallons, and so on. This system is still ...