RE: [CH] light reflectivity

Parkhurst, Scott Contractor (PARKHURS@LEAV-EMH1.ARMY.MIL)
Thu, 21 Jan 1999 13:22:00 -0600

>In flash photography light falls off - looses intensity- at the
>rate of the reciprocal of the distance squared.  1/dē
>
>I wonder if with low intensty lights like florescent tubes,
>that even if you used mirrors to reflect the light, is there
>enough energy left to be even worthwhile. ??

I remember seeing on a web page (Lynn Edwards?) a fairly thorough discussion
of light intensity.  I think your formula is correct for a point source
(flash bulb), but it is different for line sources (flourescent tubes).

Scott... KCK