Trade and environment: Green light or red light?
نویسندگان
چکیده
منابع مشابه
Red, Green, and Blue LEDs for White Light Illumination
The rapid improvement of the white light efficacy achievable with light-emitting diodes (LEDs) opens up new opportunities in the general illumination market. An LED light source made of red, green, and blue LEDs (RGB-LEDs) can provide the unique feature of color variability, allowing the user to select the desired color point of the lamp. The white light color accuracy required in the general i...
متن کاملEffects of Oxygen and Red Light upon the Absorption of Visible Light in Green Plants.
D. C. Effect of 2,4-dichlorophenoxyacetic acid on respiration and on destruction of indoleacetic acid in oat and sunflower tissues. Science 120: 710-712. 1954. 9. HUMPHREYS, T. E. and DUGGER, W. M., JR. The effect of 2,4-dichlorophenoxyacetic acid on the respiration of etiolated pea seedlings. Plant Physiol. 31 Suppl.: xxii. 1956. 10. HUMPHREYS, T. E. and DUGGER, W. M., JR. The effect of 2,4-di...
متن کاملTwo Cyanobacterial Photoreceptors Regulate Photosynthetic Light Harvesting by Sensing Teal, Green, Yellow, and Red Light.
UNLABELLED The genomes of many photosynthetic and nonphotosynthetic bacteria encode numerous phytochrome superfamily photoreceptors whose functions and interactions are largely unknown. Cyanobacterial genomes encode particularly large numbers of phytochrome superfamily members called cyanobacteriochromes. These have diverse light color-sensing abilities, and their functions and interactions are...
متن کاملGreen-light supplementation for enhanced lettuce growth under red- and blue-light-emitting diodes.
Plants will be an important component of future long-term space missions. Lighting systems for growing plants will need to be lightweight, reliable, and durable, and light-emitting diodes (LEDs) have these characteristics. Previous studies demonstrated that the combination of red and blue light was an effective light source for several crops. Yet the appearance of plants under red and blue ligh...
متن کاملGenerating green to red light with semiconductor lasers.
Diode lasers enable one to continuously cover the 730 to 1100 nm range as well as the 370 to 550 nm range by frequency doubling, but a large part of the electro-magnetic spectrum spanning from green to red remains accessible only through expensive and unpractical optically pumped dye lasers. Here we devise a method to multiply the frequency of optical waves by a factor 3/2 with a conversion tha...
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ژورنال
عنوان ژورنال: CEPAL Review
سال: 1997
ISSN: 1684-0348
DOI: 10.18356/f1a12e42-en