High precision water level measurement

I want to measure small variations in the level of a water tank, about
1-5 measurements per second, with a resolution of about 0,1mm and a
range of ~10mm, preferably without having to touch the fluid. Is there
any optic way of achieving this (laser interferometry?)
Any devices already available that can be used??

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Relevant Pages

  • An Analysis of the Resolution of the Michelson-Morley Experiment
    ... An Analysis of the Resolution of the Michelson-Morley ... try to make "measurements" on concepts contained in some particular theory. ... location of a fringe). ... Lets' look at the above three estimates of Michelson and Morley's actual ...
    (sci.physics.relativity)
  • Re: Roberts versus Lazio on "Overaveraging"
    ... See Babbage's classic work on bias. ... > independence when making repeated measurements. ... >> to below the resolution required for the experiment. ... Tom insists that physical resolution of the instrument depends ...
    (sci.physics)
  • Re: Roberts versus Lazio on "Overaveraging"
    ... See Babbage's classic work on bias. ... > independence when making repeated measurements. ... >> to below the resolution required for the experiment. ... Tom insists that physical resolution of the instrument depends ...
    (sci.astro)
  • Re: Roberts versus Lazio on "Overaveraging"
    ... See Babbage's classic work on bias. ... > independence when making repeated measurements. ... >> to below the resolution required for the experiment. ... Tom insists that physical resolution of the instrument depends ...
    (sci.physics.relativity)
  • Re: An Analysis of the Resolution of the Michelson-Morley Experiment
    ... Use the original author's statements to infer their resolution ... > the assumption that the measurement errors are normally distributed, ... That means their resolution for measuring fringe width is 5 ... > two measurements of the location of a fringe, ...
    (sci.physics.relativity)