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[SA] Researchers Weigh Benefits of a New Kilogram Standard  

post #1 of 19
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http://www.scientificamerican.com/po...a-new-11-01-24

Quote:
But that may soon change. The kilogram is the only unit of measurement still based on a man-made artifact. A second of time, for instance, is now defined in terms of an electron transition of the cesium atom. And the meter is tied to the speed of light. Those standards are universal and unchanging—unlike the official kilogram. The reference cylinder's mass has drifted slightly through the years—not enough to throw off your bathroom scale, but enough to bother measurement scientists.
Man made artifact?

THE SAVAGES!
post #2 of 19
Heard this before from my physics teachers.
I'm all for it..but what will we use?
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post #3 of 19
A mass that weighs exactly what one kilogram SHOULD be? Say molecule X weighed half a gram, 2,000 of them would be the new kilo. Just an idea.
post #4 of 19
Quote:
Originally Posted by Sabis View Post
A mass that weighs exactly what one kilogram SHOULD be? Say molecule X weighed half a gram, 2,000 of them would be the new kilo. Just an idea.
Have fun getting EXACTLY 2000 of them. I say they intoduce a new unit, the crapload. I weigh 72 craploads? What about you .
    
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post #5 of 19
Thread Starter 
Quote:
Originally Posted by codejunki View Post
Have fun getting EXACTLY 2000 of them. I say they intoduce a new unti, the crapload. I weigh 72 craploads? What about you .
I weigh 114 pounds.
post #6 of 19
Quote:
Originally Posted by codejunki View Post
Have fun getting EXACTLY 2000 of them. I say they intoduce a new unit, the crapload. I weigh 72 craploads? What about you .
You don't need a physical weight handy to define a kilogram. Once you've determined the exact atomic weight of a kilogram, you're done. Maybe this is too simplistic, but just figure out the atomic weight of the current kilogram, and use that weight from here on out. Then you could recreate a new kilogram whenever you wanted, so long as you had a scale accurate enough to tell you the exact atomic weight of something.
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post #7 of 19
We should just start using the most obscure units possible.

"Excuse me sir, do you know how fast you were going?" "I had you at around .779 smoots per fortnight..."
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post #8 of 19
Quote:
Originally Posted by frickfrock99 View Post
I weigh 114 pounds.
I just pinched 114lbs.

OnTopic: There have been some pretty radical ideas on how to replace the kilogram, one of which isn't remarkably removed from the fellow a few posts up's idea to just use a determined quantity of a specific atom.

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

Quote:
Though not offering a practical realization, this definition would precisely define the magnitude of the kilogram in terms of a certain number of carbon‑12 atoms. Carbon‑12 (12C) is an isotope of carbon. The mole is currently defined as “the quantity of entities (elementary particles like atoms or molecules) equal to the number of atoms in 12 grams of carbon‑12.†Thus, the current definition of the mole requires that 1000⁄12 (83⅓) moles of 12C has a mass of precisely one kilogram. The number of atoms in a mole, a quantity known as the Avogadro constant, is experimentally determined, and the current best estimate of its value is 6.02214179(30)×1023
entities per mole (CODATA, 2006). This new definition of the kilogram proposes to fix the Avogadro constant at precisely 6.02214179×1023
with the kilogram being defined as “the mass equal to that of 1000⁄12 · 6.02214179×1023
atoms of 12C.â€
    
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post #9 of 19
Quote:
Originally Posted by frickfrock99 View Post
I weigh 114 pounds.
but on another note wouldn't you prefer saying you weigh 114 craploads

I don`t agree with adding new systems of measurement and weight, we have enough now that I think are sufficient for everyday life. It may not be good enough for scientists and such but they can do whatever they want as long as they don`t force new systems on us to learn so it can actually become generalized. My opinion of course.
Edited by Yumyums - 1/24/11 at 9:23pm
post #10 of 19
New picture?

I miss chocolate eating lady
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