The screen was set up as it had been in the other building, and everything was made ready for the operations of the photic borer.
The after-effects of photic and mechanical stimulation are similar.
In these cases the photic stimulus produces partly chemical and partly mechanical changes.
As might well be supposed, this work with the "photic borer," as Clewe now called his instrument, was of absorbing interest.
The latent period of photic reaction is shortened with the increasing intensity of light.
I shall describe a device which gives a continuous record of photic variation for the whole day.
photic pho·tic (fō'tĭk)
Of or relating to light.
Penetrated by or receiving light.
Designating or relating to the layer of a body of water that is penetrated by sufficient sunlight for photosynthesis.