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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsWeight. WHAT!?! The kilogram has changed
Out with the old kilogram, in with the new -- scientists introduce more accurate measure
The new definition is based on the Planck constant -- a physical constant observed in the natural world -- rather than the precise weight of a piece of metal kept under lock and key.
For more than 100 years Paris has been home to Le Grand K -- or the International Prototype Kilogram, as it is officially known -- a block of metal that previously defined the weight of a kilogram.
The reason for the change to the International System of Measurement (SI) units was that over time the prototype lost atoms and therefore mass because it is "susceptible to damage and environmental factors," according to the National Physical Laboratory (NPL), which houses Kilo 18, Britain's copy of Le Grand K.
Le Grand K was compared with the various copies only once every 40 years, which made the calibration potentially inaccurate. Though the change in mass is roughly equivalent to the weight of an eyelash, the repercussions could be severe.
https://www.cnn.com/2019/05/20/world/new-kilogram-introduced-scli-intl-scn/index.html
Solly Mack
(90,740 posts)tymorial
(3,433 posts)You know it's funny, it always happens around the same time the batteries start failing on my scale and it provides a faulty reading. Weird coincidence that
Solly Mack
(90,740 posts)For shame!
Fight the power! (remove the batteries)
tymorial
(3,433 posts)I swore that I would never get back to where I was. I am so mad at myself.
Solly Mack
(90,740 posts)Easier said than done, I know.
We can't change what we're not aware of - so you're halfway there already. You're aware.
Helps me anyway.
underpants
(182,271 posts)Its the fridge
The enemy of the tasty
Solly Mack
(90,740 posts)3Hotdogs
(12,207 posts)DetlefK
(16,423 posts)pansypoo53219
(20,906 posts)DetlefK
(16,423 posts)pansypoo53219
(20,906 posts)zipplewrath
(16,646 posts)A pound is still a pound world round.
muriel_volestrangler
(101,149 posts)and in 3 different ways in the US:
In 1959, the United States National Bureau of Standards redefined the pound (avoirdupois) to be exactly equal to 0.453 592 37 kilograms, which had been designated as the International Pound. According to a 1959 NIST publication, the United States 1894 pound differed from the international pound by approximately one part in 10 million.[1] The difference is so insignificant that it can be ignored for almost all practical purposes
https://en.wikipedia.org/wiki/Pound_%28mass%29#In_the_United_States
Johonny
(20,681 posts)underpants
(182,271 posts)hunter
(38,264 posts)rsneha
(8 posts)Convert weight units Kilograms
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