Solarization


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solarization

[‚sō·lə·rə′zā·shən]
(graphic arts)
Reversal of a photographic image due to great overexposure.
(physics)
Loss of transparency or coloration of glass exposed to sunlight or ultraviolet radiation.

Solarization

 

in photography, a phenomenon arising when a photographic material undergoes an extreme amount of over-exposure: the greater the exposure, the less the density of the blackening of the material upon development. For the moderate exposures ordinarily used in photography, by contrast, the density increases with the exposure time.

Solarization is a result of the oxidation of latent-image centers by neutral bromine atoms. Under great exposures, these neutral atoms are formed in substantial concentrations within the microcrystals of the photographic emulsion and rise to the surface of the crystals (the rebromination process).

References in periodicals archive ?
For example, in small-scale strawberry production, solarization effectively controlled weeds and was more cost effective than methyl bromide while providing similar yields (Stapleton et al.
Oka Y, Shapira N, Fine P (2007) Control of root-knot nematodes in organic farming systems by organic amendments and soil solarization.
Soil moisture is critical for solarization to work correctly because it makes organisms more sensitive to heat and transfers heat to weed seeds in the soil (much like "cooking" them).
Control of pink root disease in onion using solarization and fumigation.
The solarized CC performance was then evaluated in terms of power production penalty, fossil fuel saving and solar fraction due to solarization (Figure 3--typical Summer day).
The Soil Solarization in the Mark of the Environment Conservation
Because of the lethal effects from high soil temperature, solarization must be conducted before crops are planted.
All efforts, save solarization, have not solved this problem.
Excessive nematode populations may be reduced temporarily by soil solarization.