The kilo standard weighs less than a kilogram

The kilo standard weighs less than a kilogram

May 28, 2014

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The palm-sized metal cylinder, known as the International Standard for Kilogram, is hidden in a store near Paris, under three hermetic glass caps. Forged from an alloy of platinum and iridium in 1879, it was presented as an ideal kilogram - the gold standard with which any other kilogram can be compared.
The problem is that the reference kilogram is losing weight: at the last weighing in 1998, it was 0.05 milligrams lighter than its official copies from other laboratories in the world. Experts are not sure where the weight has gone, but according to one theory, the copies were held in their hands more often, which added weight to them. Another theory says that air is gradually released from the alloy from which the reference kilogram is made.
The kilo standard weighs less than a kilogram
Australian scientists have created a kilogram sphere of silicone in the hope that they can count the number of atoms it contains to create a more accurate standard.American physicists from the National Institute of Standards and Technology (NIST) are trying to redefine the kilogram in terms of the amount of tension needed to lift the weight. But so far, nothing can come close to the reference kilogram.
Why should we worry about the ideal kilogram in the store or not? A kilogram is used as a building material for other measures: a joule is the amount of energy required to move one kilogram per meter, and a candela, a measure of the brightness of light, is measured in joules per second.
In the end, this can cause problems in a number of industries, especially in the field of technology: if microchips produce more processes at higher speeds, even tiny changes can lead to a catastrophe.
The unreliability of the reference kilogram “will become noticeable in the electronics industry in the next 10–20 years,” warns NIST physicist Richard Steiner. If your next smartphone turns on, you will know which piece of metal to blame for this.

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  • The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram

    The kilo standard weighs less than a kilogram