jeudi 15 novembre 2018

The kilogram is about to be redefined

Reality is about to change. The kilogram which until now, has been defined as the mass of a certain artefact (or big K) held in a vault in Paris. They will define the kilogram by defining as planks constant as exactly 6.62607015 X 10^-34 Js. This then determines how big a kilogram is.

This will mean that the values for the kelvin, mole and ampere will all now be fixed.

Avogadro's constant will be 6.02214076 X 10^23
The charge on an electron will be 1.602176634X10^-19C
Boltzmann constant = 1.380649X10^-23J/K

See this YouTube for details

[yt]c_e1wITe_ig[/yt]

Or https://www.cnet.com/news/scientists...logram-weighs/

This thread is a duplicate of this one http://www.internationalskeptics.com...ad.php?t=90329. Started in 2007. So the discussion has been going on for some time. Come to think of it my science teacher mentioned it in the 1970s.


via International Skeptics Forum https://ift.tt/2zfFjZg

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