The definition of a kilogram is officially going to change

Gert Rietveld and International representatives applause after the final vote introducing the reform during the International General Conference of Weights and Measures held in Versailles near Paris France Nov. 16 2018

Scientists wanted a new method of defining a kilogram, and as it turns out coming to that new definition was incredibly tricky.

Not just kilogram but they also made a decision to update definitions for the ampere (electrical current), the kelvin (thermodynamic temperature) and the mole (amount of a substance).

Dutch CIPM member Gert Rietveld and International representatives applause after the final vote introducing the reform during the International General Conference of Weights and Measures held in Versailles, near Paris, France, Nov. 16, 2018. The goal behind this change is to create a constant way of measuring a kilogram.

This would mean enable scientists to accurately calculate an exact kilo without having to measure replica kilograms against Le Grand K. "We will now no longer be bound by the limitations of objects in our measurement of the world, but have universality accessible units that can pave the way to even greater accuracy, and even accelerate scientific advancement".

The International System of Units was established in order to eliminate conflict among merchants, as they struggled to converse one local measuring unit to another. Measuring masses much smaller than a kilogram will be easier now.

The Planck constant describes the behavior of particles and waves on the atomic scale and depends on three units: the meter, kilogram and second.

Up to now, it has been defined by a weight of a platinum-based ingot called "Le Grand K" locked in a vault in France, but now the baseline measure is "going electronic". The revised SI will maintain its relevance by facilitating technical innovations.

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The Planck constant is, in turn, measured using an instrument known as the Kibble balance, first developed at NPL by the late physicist Bryan Kibble. The new definition of a kelvin promises advantages for scientists needing to make very precise measurements.

Seven main units of measurement are now in use, including the metre for length, the kilogramme for mass, the second for time, the ampere for electric current, the kelvin for temperature, the mole for the amount of a substance, and the candela for luminous intensity. It measures the amount of electrical current needed to create the electromagnetic field equal to the force acting on the chosen mass.

Initially, the Kilogram unit was defined by a set weight placed in a closed environment from which different sample weights were taken.

After about 130 years, the definition of Kilogram unit has finally seen a massive change.

The resolution will take effect on May 20, 2019. He asked what would happen if a fingerprint got on the kilogram prototype and increased its mass.

Unlike the old physical measurement, the new "electric kilo" formula can not accumulate particles of dust and pollution, decay over a period of time time, or be dropped and damaged.

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