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The amplification reaction causes pH to lower and Mg2+ levels to drop. This can be perceived by indicators, such as Phenol red, for pH, and hydroxynaphthol blue (HNB), for magnesium. [15] Another option is to use SYBR Green I, a DNA intercalating coloring agent. [16] Colorimetric detection of RT-LAMP reactions in Eppendorf tubes.
Light-dependent reactions of photosynthesis at the thylakoid membrane. Light-dependent reactions are certain photochemical reactions involved in photosynthesis, the main process by which plants acquire energy. There are two light dependent reactions: the first occurs at photosystem II (PSII) and the second occurs at photosystem I (PSI).
He showed that for each mole of chlorine introduced into a hydrocarbon, one mole of hydrogen chloride is also formed and noted the light-sensitivity of this reaction. [2] The idea that these reactions might be chain reactions is attributed to Max Bodenstein (1913). He assumed that in the reaction of two molecules not only the end product of the ...
The mercury lamp (connected to white power cords) can be seen on the left, set inside a water-jacketed quartz tube. The emitted light must reach the targeted functional group without being blocked by the reactor, medium, or other functional groups present. For many applications, quartz is used for the reactors as well as to contain the lamp.
The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. [5] White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device. [6]
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Organic photochemistry encompasses organic reactions that are induced by the action of light. [1] [2] The absorption of ultraviolet light by organic molecules often leads to reactions. In the earliest days, sunlight was employed, while in more modern times ultraviolet lamps are employed. Organic photochemistry has proven to be a very useful ...
The spectrum of light emitted from a fluorescent lamp is the combination of light directly emitted by the mercury vapor, and light emitted by the phosphorescent coating. The spectral lines from the mercury emission and the phosphorescence effect give a combined spectral distribution of light that is different from those produced by incandescent ...