I found a handkerchief tied close, but not too tightly, round the eyes for a whole night, to be a more effectual remedy for this disagreeable complaint than any application of Eyewater; and my companions being induced to try the same experiment, derived equal benefit from it.
"Three Voyages for the Discovery of a Northwest Passage from the Atlantic to the Pacific, and Narrative of an Attempt to Reach the North Pole, Volume 2 (of 2)"
Sir William Edward Parry
Photoconductivity allows the charged electrons to fall away from the areas exposed to light.
"Wikipedia"
Hot electrons from higher energy states carry more thermal energy than cold electrons, while electrical conductivity is rather insensitive to the energy distribution of carriers because the amount of charge that electrons carry, does not depend on their e
"Wikipedia"