scientific measurement standards

Scientific measurement standards are agreed-upon reference points and units used globally to ensure consistency and accuracy. They are based on reliable, repeatable phenomena or objects, such as the meter defined by the distance light travels in a specific fraction of a second, or the kilogram once linked to a platinum-iridium alloy cylinder. These standards allow scientists and industries worldwide to communicate, compare results, and develop technology reliably. Regular calibration against these standards maintains measurement integrity, ensuring that whether measuring time, weight, or volume, results are precise, comparable, and universally understood.