In 1668, John Wilkins proposed a decimal technique through which length, space, quantity, and mass were joined to each other based on a pendulum that had a beat of 1 2nd as a foundation unit of duration. The Global System of Units (SI) may be the normal method of units https://keeganvunsj.wikicommunications.com/6119367/not_known_factual_statements_about_units_calculator