Growing under lights
Kipp McMichael (Fri, 06 Nov 2015 16:55:28 PST)
Greetings,
Light intensity falls off by the inverse square of the distance to the light source. For instance, doubling the distance to a light source will decrease the light intensity falling on an object by a factor of 4.
-|<ipp
From: rdevries@comcast.net
Date: Fri, 6 Nov 2015 19:19:11 -0500
To: pbs@lists.ibiblio.org
Subject: Re: [pbs] Growing under lights
What is this inverse-square law for light ?
Rimmer
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