Count to a million

[DasCapschen 7,775]

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Depends, in what material?
In air at 0°C, the speed of sound is roughly 332m/s

[Dawnchaser 🌄 8,098]

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Its an awful song by Coldplay

 

And good answer CAPS

Yes it depends on medium, temperature and allsorts 

 

 

Hey Cake

[DasCapschen 7,775]

364907

 

Did you know, a meter is defined as the distance light passes in a vacuum in 1/299.792.458 seconds? (299.792.458 = value of lightspeed)

[Dawnchaser 🌄 8,098]

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Rather than the average of those platinum bars kept in Paris (?)

I suppose we need a more accurate or defined version.

Eg Quartz oscillations for a second

[DasCapschen 7,775]

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What? How is that above definiton not accurate enough?

 

And did you know the only base unit in the SI (metric) system that is not defined by nature (like the meter as said above) is the kilogramm?

Yes, the base unit of measuring weight is NOT the gramm, it's the kilogramm, despite it having a prefix.

And the weight of 1 kilogramm, as I mentioned is not defined by nature, but by the international kilogramm-prototype

[Dawnchaser 🌄 8,098]

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Yes the wavelength version is accurate.

I meant more accurate than the standard bar that's 0.02% too short of the intended distance

[DasCapschen 7,775]

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Oh ok

 

By the way, a second is defined as the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom

 

copied that one from wikipedia because too lazy to translate from german to english xD

Edited November 26, 2015 by CPT.CAPS

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And now I know,

not sure where I had the quartz thing from (maybe school 20+ years ago)

 

Any how, don't care, 'cos I'm slightly younger than I should be

[DasCapschen 7,775]

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[Dawnchaser 🌄 8,098]

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'cos of time dilation

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Although it'll take about 60,000hrs at 500mph to gain a second

[DasCapschen 7,775]

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[Dawnchaser 🌄 8,098]

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I guess I've wasted all that speed advantage

(no CtaM, I don't mean you, you're not a waste) 

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Apparently we use a Capital letter for Si if its named after a person

K Kelvin

A Ampere

etc

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Seems that way.