Measurements

By Mark on Friday 7 September 2007 at 12:15

This article has some interesting* things I never knew about standards of measurement:

1 Metre - The distance traveled by light in a vacuum in 1/299,792,458 second
1 Second - The time it takes for a cesium-133 atom to cycle 9,192,631,770 times between two specific quantum states
1 Ampere - The current required to create a force of 2 x 10-7 newtons per meter between two parallel wires
1 Kelvin (Temperature) - 1/273.16 the temperature of the triple point of water (when it's simultaneously gas, liquid, and solid)
1 Mole (Amount of Stuff) - The number of atoms in 12 grams of carbon 12
1 Candela (Brightness) - The intensity of a 1/683-watt yellow-green light spread over a square meter, seen from a metre away

* Subject to nerd-cell count

6 comments:

On Friday 7 September 2007 at 17:14, jason said:

mark the only measurements you are really interested in is the one you get behind a bar

On Friday 7 September 2007 at 17:28, Mark said:

Yeah, should add:

1 Fuckload - The amount of Mark usually ends up drinking between 7pm and 5am on a Friday

Not quite as precisely measured, but there you go...

On Sunday 9 September 2007 at 21:15, Katie said:

that a technical term mark?

On Monday 10 September 2007 at 09:37, Mark said:

Yep - I measured it this weekend and it's totally accurate.

On Monday 10 September 2007 at 19:01, Matt said:

What's great is that you can simplify any other so-called “derived” units (i.e. the lux, the ohm, the farad, the henry, the weber, etc) down in to a combination of those six, plus the kilogram.

Isn't science brilliant?

On Monday 10 September 2007 at 23:15, Mark said:

Welcome back from the Bermuda Triangle Mr B - you might like this too

Comments are now closed for this entry.

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