Converting mmHg to mmH20

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  1. RTARD's Avatar
    1 24-02-2008  20:00
    • Junior Member
    • Location: pon da dutty region..... Posts: 7,454,875
    Converting mmHg to mmH20
    How would i go about doing this? I think its based on the density of water and mercury, but im still not sure how to do it.
  2. Drummy's Avatar
    2 24-02-2008  20:45
    • Benevolent Member
    • Location: Middlesbrough
    • Posts: 643
    Re: Converting mmHg to mmH20
    the pressure due to a column of liquid of height h = p = \rho g h

    it follows then that the ratio of the heights of a water column and a mercury column which exerted the same pressure would be equal to the ratio of their densities, i.e. about 13.6 : 1
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