"symmetrically placed in the same horizontal plane at a distance of 571 mm from each other"
OK.. If they are using this to define a meter, how do they know how long 571mm is?
Registered Member
"symmetrically placed in the same horizontal plane at a distance of 571 mm from each other"
OK.. If they are using this to define a meter, how do they know how long 571mm is?
Charter Member
Damn???Originally Posted by dmd
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“You can vote your way into socialism, but you have to shoot your way out.” — Too fundamental to have an attribution
Charter Member
The meter has had numerous base definitions. The earliest I have seen was the distance of the step of a Roman solider.
For an in depth discussion this is a good start.
"A pessimist sees the difficulty in every opportunity, an optimist sees the opportunity in every difficulty” ---Sir Winston Churchill
"Political extremism involves two prime ingredients: an excessively simple diagnosis of the world's ills, and a conviction that there are identifiable villains back of it all." ---John W. Gardner
“You can’t go back and change the beginning, but you can start where you are and change the ending.” ---C. S. Lewis
Registered Member
At some point any measurement unit comes down to an arbitrary choice. Could have used how far the average person could toss a midget. What they're doing is trying to define that arbitrary choice in terms that are a stable/unchangine as possible over a wide range of conditions and time.
Socialism is worse than Communism. Socialism says the Government will take care of you and everything. Communism at least says you got to work.
Charter Member
People interested in these things have continued to devise at great time and expense devices to standardize measurement. I came across the latest effort to create an evermore accurate device to measure a true kilogram — the Kibble Balance. I must presume there are circumstances in which such ultra-precise measurement becomes necessary but no examples are given in the articles. It is fascinating to me however to observe the ingenuity and dedication that goes into such endeavors though.
This first article set me off —
https://www.newscientist.com/article...on-takes-hold/
...and this second one buffaloed me with the math, but intrigued me with the descriptions of the execution —
https://www.nist.gov/si-redefinition...kibble-balance
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“You can vote your way into socialism, but you have to shoot your way out.” — Too fundamental to have an attribution
Charter Member
Doesn't 0 degrees C = 32 degrees F
This is your mind on drugs!
Charter Member
Yes, but the formula to transpose is not linear.
T(°F) = T(°C) × 9/5 + 32
or
T(°F) = T(°C) × 1.8 + 32
So, using the formula and TG’s deleted query —
15 x 1.8 = 27 + 32 = 59
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“You can vote your way into socialism, but you have to shoot your way out.” — Too fundamental to have an attribution
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