Basis for Kilogram Changed


Ocean Breeze
#1

For more than a century, the kilogram was based on a hunk of metal. The world just redefined it using quantum physics.


Since the 19th century, the world had based the kilogram on a prototype, which was stored in a safe in France. When that prototype was examined in the 1980s, it weighed less than it should, creating an international uproar.

Now representatives of more than 60 countries have approved a new definition for the kilogram by tying it to an unchanging feature from quantum physics called Planck��s constant. The new definition, unlike a physical object, should be constant across space and time.

https://www.washingtonpost.com/scien...ational&wpmk=1
 
MHz
#2
I don't this holding the attention of everybody for a few years.
 
Blackleaf
#3
What the hell's a "kilogram"?
 
MHz
+1
#4
Ask the Royals, that is what size heroin comes in when they order some.
 
Blackleaf
+2
#5  Top Rated Post
Quote: Originally Posted by MHz View Post

Ask the Royals, that is what size heroin comes in when they order some.


 
MHz
#6
I'm making in-roads with you, wow. There is an unexpected consequence.

It was probably the Queen who stole the original one, check under her bed next time you are there.
 
darkbeaver
#7
Quote: Originally Posted by Ocean Breeze View Post


For more than a century, the kilogram was based on a hunk of metal. The world just redefined it using quantum physics.


Since the 19th century, the world had based the kilogram on a prototype, which was stored in a safe in France. When that prototype was examined in the 1980s, it weighed less than it should, creating an international uproar.

Now representatives of more than 60 countries have approved a new definition for the kilogram by tying it to an unchanging feature from quantum physics called Planck��s constant. The new definition, unlike a physical object, should be constant across space and time.

https://www.washingtonpost.com/scien...ational&wpmk=1


There are no material constants in the universe. The famously declared gravity constant isn,t and requires adjustment every so often.
 
taxslave
#8
The only important item is that it won't affect your bathrro scale. Diet still on.
 
MHz
#9
Seismic crews in the far north had a crew called 'gravity testers' who were able to tell if the crust under their feet was solid rock or it had voids that would be filled with gas or oil. I had different duties so I didn't get to chat with them very much.
 

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