I have a plan.  My NDA prevents saying how.  My plan might even work !
Gus


On Aug 29, 2009, at 11:06 AM, M.L. wrote:

On Sat, Aug 29, 2009 at 12:44 PM, AGSCalabrese<agscal@gmail.com> wrote:
> Thanks Sean
> I am launching a pulse into the air and measuring time of flight down
> to .0001 inches .
> Since sound travels one inch in ~ 10**-4 seconds , I presume 10**-4
> inches will require 10**-8 resolution.
> Gus


How are you going to account for barometric pressure differences: the
~ in your 10^-4 constant?

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Martin K.
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