Just Got A Cool Meter Long Stick

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IBMJunkman

Senior member
May 7, 2015
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Have you checked it against the standard?

An "official meter" refers to the standardized unit of length in the International System of Units (SI), currently defined as the distance light travels in a vacuum in 1/299,792,458 of a second, a definition based on the universal speed of light for ultimate precision. Historically, the meter was based on physical artifacts like platinum-iridium bars or wavelengths of light, but the modern definition ensures it's a consistent, universally reproducible standard used globally in science and everyday life.
 
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WelshBloke

Lifer
Jan 12, 2005
33,339
11,484
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Have you checked it against the standard?

An "official meter" refers to the standardized unit of length in the International System of Units (SI), currently defined as the distance light travels in a vacuum in 1/299,792,458 of a second, a definition based on the universal speed of light for ultimate precision.
Going to have to pretty quick clicking that stopwatch to time that!
 

BoomerD

No Lifer
Feb 26, 2006
66,534
14,917
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Have you checked it against the standard?

An "official meter" refers to the standardized unit of length in the International System of Units (SI), currently defined as the distance light travels in a vacuum in 1/299,792,458 of a second, a definition based on the universal speed of light for ultimate precision. Historically, the meter was based on physical artifacts like platinum-iridium bars or wavelengths of light, but the modern definition ensures it's a consistent, universally reproducible standard used globally in science and everyday life.
I wanna know how they measured that in the 1790s when the metric system was invented.
 

Paperdoc

Platinum Member
Aug 17, 2006
2,512
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BoomerD asked, "I wanna know how they measured that in the 1790s when the metric system was invented." They did not, of course. In fact many "standards" have been slightly revised over time as our technological capabilities advanced. For example, after the Metre was re-defined, the actual INCH was re-defined as being exactly 25.4 mm. eliminating the many stray digits after the ".4"
 

BoomerD

No Lifer
Feb 26, 2006
66,534
14,917
146
imagine trying to measure stuff in meters . . . lol
Right? I was on a construction job in the late 80s for a new steel rolling mill at the USS-POSCO plant in Pittsburg, CA. The rolling machinery was from Japan. The major components weighed as much as 100 tons, had to be assembled with as little as 1mm tolerance...and the Japanese engineers just couldn't understand why the delta peat soil the plant was built on kept moving under the weight.