The Kilogram Has Excess Mass, Could Cause Scientific Havok

[ien2222]

edit: To the down-thumbers, this isn't The Kilogram that's stored in Paris. Even then, it's not like they arbitrarily made a ball of metal and said, "Welp, that's a kilogram, hopefully it never changes mass or we're effed." A kilogram is the mass of 1.000025 liters of water at 4C. In otherwords, it's possible to recreate a kilogram.

Wrong. The kilo is the last classical measure that hasn't been standardized. There's been more equivalents than just water, but they are not an exact measure. The kilo in Paris is the standard, and only standard in the world.

And yes, they use the replicas quite a bit for calibration, especially for instruments that require extreme precision.

 

[mikewong]

But are the replicas that precise?

 

[raymarv]

Just tweak the Higgs boson a little.

 

[johnnyevil]

This...this is why I love humanity so much. Absurdity. If you can't laugh at this then I fear you may be missing some of the point of being alive in the first place

 

[raytseng]

http://en.wikipedia.org/wiki/Kilogram#Stability_of_the_international_prototype_kilogram

apparently this is Olds, and people have researching and charting the drift for quite some time. The news is that he finished reporting his ESM results and that he recommends a suntan "cleaning"

 

[blurr91]

[citation][nom]Kand[/nom]but the americans and other british related copuntries still use pounds for mass and FEET for lenght.the FEET didn`t change it`s length?[/citation]

Pound is weght. Slug is mass.

 

[alextheblue]

I say we scrap the faulty cylinder and use it to make spark plugs. You know, to set an example for the rest of the cylinders.

 

[_Cosmin_]

That means only that UK should do something about the SMOG (as we can all see its negative effects), on the other hand... they never get used to metric system and may just be an excuse to keep their imperial system!

 

[_Cosmin_]

[citation][nom]whyso[/nom]I don't quite get why they don't define a kilogram by a specific number of atoms of some isotope of an element, say carbon.[/citation]

Its much easyer as 1kg = 1 liter of pure h2o ...

 

[jabliese]

This has been a Known Problem for as long as these kilograms have been around. The news here is the suntan cleaning method that is an improvement over the approved polishing, at least for carbonaceous compounds. And, yes, it affects all of the copies, not just the UK one.

 

[ludarabota]

I've always thought that 1 kg = 1 liter of water = 1cubic decimeter of water - which is really close enough i guess. It's not like I ever weight something on a perfectly accurate scale.

 

[unklep]

[citation][nom]ludarabota[/nom]I've always thought that 1 kg = 1 liter of water = 1cubic decimeter of water - which is really close enough i guess. It's not like I ever weight something on a perfectly accurate scale.[/citation]

just to add to your point that the water has to be pure H2O not H3O which is also water but heavier and can create small fireworks off the cost of florida.

 

[Dragos D]

easiest diet I've ever been on.

 

[jryan388]

Does nobody understand the difference between mass and weight?

 

[unklep]

Does nobody understand the difference between mass and weight?

your mass doesn't change if your on a different planet or the moon. think if it like atomic attraction of atoms

 

[Bloodire]

This is horrible. The world will come to an end. No longer will I have a true kilogram!