Quote:
Originally Posted by freebeard
I'm having trouble sorting out whether the viscosity of the fluid needs to be greater or less at smaller scales.
Gnats feel air like we do water, so maybe a less viscous fluid like ethanol?
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The kinematic viscosity of water is an order of magnitude smaller than that of air--so using water instead of air, you can use an object an order of magnitude smaller in length, or test at a speed an order of magnitude smaller, or some combination of both.