https://www.youtube.com/watch?v=pTSkRIw1m60

On Mon, Sep 25, 2017 at 2:23 AM, David Mann <[email protected]> wrote:
> On Sep 25, 2017, at 12:21 PM, Mark C <[email protected]> wrote:
>
>> Aside from banding the problem with ambient light is that there can be a 
>> surprising amount of movement in subjects due to minor air currents or 
>> vibration.
>
> Many moons ago I visited a lab that produced holograms.  They said mushrooms 
> grow too fast to be imaged without using a high-power pulse laser (which they 
> didn't have).  Speaking across the optical table was avoided due to the 
> vibrations.  It only would have taken a few tens of nanometres to cause 
> problems.
>
> Cheers,
> Dave
>
>
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