Redefining the Kilogram

摘要

The International System of Units (SI) also known as the metric system relies on precise definitions of several physical measurements, such as the mass. I have addressed some aspects and the relationship of mass and weight in detail in my article Measuring Acceleration in Circuit Cellar 332, March 2018). As the reference, the International Prototype of the Kilogram, IPX, also known as "le Grand K," was created in 1889 from a block of Platinum and since then has been kept in Paris under three glass bell jars [2]. Exact replicas have been constructed and located around the world to be used in defining mass of everything. Including countries, such as the United States, where an imperial and customary systems of units are in commercial use.