|
![](/i/fill.gif) |
Warp <war### [at] tag povray org> writes:
> scott <sco### [at] scott com> wrote:
>> >> it's also useful that 1 bar ~= 10 metres of water for quick estimations.
>> >
>> > I didn't quite understand that.
>
>> It's useful for quick estimations involving water (one of the most common
>> pressurised fluids you come across) because it's a multiple of 10.
>
>> eg a water tank 4 metres above the tap, pressure at the tap is 0.4 bar.
>
>> or, 2 bar coming into your house, what's the pressure at the valve in your
>> roof 6 metres up? 1.4 bar
>
> You mean that when you dive, each 10 meters of depth adds approximately
> 1 bar of pressure?
Yep. Pressure in a liquid is h*g*density (g being 9.8 m/s^2 in most
places).
Since water has a nice density, it works out approximately (take g to be
10).
Post a reply to this message
|
![](/i/fill.gif) |