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How do you magnify light intensity?

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Journal Article•DOI The concept of light intensity adaptation in marine phytoplankton: Some experiments with Phaeodactylum tricornutum John Beardall, I. Morris - Show less +1 more 01 Sep 1976-Marine Biology 208 Citations	One result suggested that growth at a suboptimal light intensity did enhance the ability to utilize lower light levels.
Journal Article•DOI Sun-pumped lasers: revisiting an old problem with nonimaging optics. Dave Cooke 20 Dec 1992-Applied Optics 31 Citations	Such an intensity exceeds the intensity of light at the surface of the Sun itself (63 W/mm(2)) by 15% and may have useful applications in pumping lasers, which require high intensities of light to function.
Open access•Journal Article•DOI On optical pyrometry Alfred Charles Egerton, Matthew Milford - Show less +1 more 02 Dec 1930-Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences 6 Citations	It is therefore essential to magnify the source of light.
Open access•Proceedings Article•DOI Determining light distribution in human head using 3D Monte Carlo simulations Christoph Böcklin, D. Baumann, Emanuela Keller, Jürg Fröhlich - Show less +3 more 09 Feb 2012-Proceedings of SPIE 3 Citations	This light intensity map can advantageously be created by numerical simulations.
Journal Article•DOI Signal-to-noise optimization in polarimetry. Edward S. Yeung 01 Dec 1985-Talanta 16 Citations	A high-intensity light-source is also desirable, provided that the intensity can be stabilized.
Journal Article•DOI Illumination effects on the stability of the passive film on iron Patrik Schmuki, H. Böhni - Show less +1 more 01 Apr 1995-Electrochimica Acta 77 Citations	This effect is strongly dependent on the light intensity.
Journal Article•DOI Classroom exercises with the Terrell effect John Robert Burke, Frank J. Strode - Show less +1 more 01 Oct 1991-American Journal of Physics 15 Citations	Transformation of light intensity also provides useful exercises and interesting results.
Journal Article•DOI Liquid crystal bifocal lens with adjustable intensities through polarization controls. Yingjie Zhou, Yide Yuan, Tibin Zeng, Xiangru Wang, Dongliang Tang, Fan Fan, Shuangchun Wen - Show less +6 more 15 Oct 2020-Optics Letters 16 Citations	Besides, the relative intensity can be easily controlled with different weights of LCP and RCP light.
Open access•Proceedings Article•DOI Illuminating image-based objects Tien-Tsin Wong, Pheng-Ann Heng, Siu-Hang Or, Wai-Yin Ng - Show less +3 more 13 Oct 1997 5 Citations	Hence, the intensity, the type and the number of the light sources can be manipulated interactively.

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How does light intensity affects plants?5 answersLight intensity has a significant impact on plants. Higher light intensity promotes the growth and development of ornamental plants in constructed wetlands, resulting in a higher growth rate. Light intensity also influences the synthesis of steviol glycosides (SGs) in Stevia rebaudiana plants, with higher light intensity leading to increased expression of biosynthetic genes and higher levels of SGs. In lettuce plants, exposure to higher light intensities results in higher biomass accumulation, faster development of the photosynthetic system, and improved water use efficiency. Additionally, in a wild population of Adenostyles alliariae, leaf surface area increases and fluctuating asymmetry increases as light intensity decreases, indicating a relationship between light stress and developmental instability. Overall, light intensity plays a crucial role in plant growth, development, and the synthesis of important compounds.

What are the different light intensity?4 answersDifferent light intensities have been studied in various papers. The first paper by Kulchin et al. investigated the influence of light intensity on the growth and development of plants, specifically Stevia rebaudiana and Solanum tuberosum plantlets. They used an LED light source with intensities of 75, 135, 230, and 382 μmol/s*m2. Another paper by Li described a light intensity sensor that had a signal input checkout unit and a data processing unit. The sensor was capable of measuring and debugging light intensity. Dongsheng and Guangcai proposed a method for detecting light intensity using a light intensity detection unit with photoelectric conversion circuits and gating circuits. Finally, Kranjc's papers discussed the temperature dependence of photon number and radiation power density for different spectral compositions of light, such as laser or chaotic light.

What is the effect of light intensity on photosynthesis?3 answersLight intensity has a significant effect on photosynthesis. Higher light intensities generally lead to increased photosynthetic capacity, as observed in alfalfa seedlings exposed to higher light intensities, which resulted in improved leaf orientation towards the sun and upregulation of genes related to photosynthesis. Similarly, lettuce showed higher photosynthesis capacity and yield under appropriate light intensities. In contrast, low light intensities can cause a decrease in photosynthetic parameters and delayed peak times of photosynthetic genes. Shade conditions, characterized by changes in light density and quality, can also affect photosynthetic capacity, with high far-red light improving crop photosynthesis under shade conditions. Additionally, light intensity can interact with other factors, such as temperature and nutrient concentration, to influence photosynthesis in seaweed, where high light intensities combined with certain ammonium concentrations increased photosynthetic rates. Overall, light intensity plays a crucial role in regulating photosynthesis in various plant species.

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