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Jul. 29th, 2005 01:10 pm
Miami Vice
Men and Motors are currently reshowing Miami Vice (21:00 each night).
( Vin rambles on about an eighties TV cop show... )
( Vin rambles on about an eighties TV cop show... )
Jul. 29th, 2005
Jul. 29th, 2005 02:30 pm
Argh - this is doing my head in
This is all ![[livejournal.com profile]](https://www.dreamwidth.org/img/external/lj-userinfo.gif)
suebeedoo's fault...
The kilogram was originally defined as the mass of one litre of pure water at a temperature of 4 degrees Celsius and standard atmospheric pressure (although these days a metal cylinder defines it instead).
Now, a litre of tap water at room temperature at my house clearly would NOT weight exactly one kilogram. But would it weigh more or less? It's warmer, so less dense, so arguably less. But there are lots of metals and minerals dissolved in tap water, making it heavier.
Does anyone know the definitive answer? Does anyone have sensitive scales they can test this on? Do I need to get out more?
suebeedoo's fault...The kilogram was originally defined as the mass of one litre of pure water at a temperature of 4 degrees Celsius and standard atmospheric pressure (although these days a metal cylinder defines it instead).
Now, a litre of tap water at room temperature at my house clearly would NOT weight exactly one kilogram. But would it weigh more or less? It's warmer, so less dense, so arguably less. But there are lots of metals and minerals dissolved in tap water, making it heavier.
Does anyone know the definitive answer? Does anyone have sensitive scales they can test this on? Do I need to get out more?