Artificial light, bright

Speyer and Wolf obtained diiron enneacarbonyl, Fe2(CO)9, by exposing an acetic acid solution of iron penta-carbonyl to sunlight. The yield of 30% claimed by these authors is reached only under the ideal conditions of bright sunshine and low temperatures. The modified procedure which is described here is based on the use of artificial light and water cooling of the reaction mixture it gives consistently high yields of diiron enneacarbonyl. 

Porphyria, porphyrin sensitivity, hypersensitivity to sunlight or bright artificial light Any malignancy treatment... 

Early LEDs were limited in brightness, and only the red ones could be fabricated inexpensively. Eventually, other color LEDs and LEDs capable of higher light output were developed. As the capabilities of LEDs expanded, they began to see more uses. By the early twenty-first century, LEDs began to compete with other forms of artificial lighting based on their energy efficiency. 

Mishima K, Okawa M, Hozumi S, Hishikawa Y (2000) Supplementary administration of artificial bright light and melatonin as potent treatment for disorganized circadian rest-activity and dysfunctional autonomic and neuroendocrine systems in institutionalized demented elderly persons. Chronobiol Int 17 419-432... 

Stressors to induce grooming e.g., novel environment, predator exposure, bright light, or other means of artificially inducing grooming (e.g., water mist). 

When wood is exposed to the outdoors or in artificial UV light for a relatively short period, changes in brightness and color are readily observed. The decreases in brightness and color during 480 d of outdoor weathering are shown in Figures 6 and 7, respectively. 

Hon and Feist (64) exposed four hardwoods (red oak, white oak, yellow poplar, and sweet gum) to outdoor weathering and artificial UV light. Discoloration and loss of brightness were observed for all species, regardless of their exposure conditions. White oak and sweet gum changed color at a slower rate than red oak and yellow poplar. 

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