photochemical reaction वाक्य
उदाहरण वाक्य
मोबाइल
- Humans rely on photochemistry for the formation of vitamin D, and vision is initiated by a photochemical reaction of rhodopsin.
- For example, some organic dye molecules can undergo a photochemical reaction, which alters the whole chemical structure of the molecule.
- Human-made smog is derived from coal emissions, vehicular emissions, industrial emissions, forest and agricultural fires and photochemical reactions of these emissions.
- They enclosed samples of gas in a quartz tube, which was subjected to an intense flash of light which caused photochemical reactions.
- Over the decades, many interesting but puzzling organic photochemical reactions were discovered that did not proceed by ordinary organic ground state processes.
- Another application of the photoacoustic effect is its ability to estimate the chemical energies stored in various steps of a photochemical reaction.
- Porter went to Cambridge in 1945 as a postgraduate research student with Norrish, studying the production of free radicals in gaseous photochemical reactions.
- The cone cells, responsible for color vision, probably respond to frequency, rather than wavelength, because the detection of light is a photochemical reaction.
- Researchers aimed to utilize the hydrophobic environments of the dendritic media to conduct photochemical reactions that generate the products that are synthetically challenged.
- Methane dissociates in the atmosphere through photochemical reactions-for instance it reacts with hydroxyl ions forming water and CO 2 in the presence of sunlight.
- Specifically Michler s ketone absorbs intensely at 366 nm and effectively sensitizes photochemical reactions such as the dimerization of butadiene to give 1, 2-divinylcyclobutane.
- He was the first to use two lasers to follow photochemical changes in short-lived intermediates during a reaction which allows scientists to measure photochemical reactions.
- Photochemical reactions are initiated by the absorption of a photon, typically in the wavelength range 290-700 nm ( at the surface of the Earth ).
- Worldwide, the largest source of carbon monoxide is natural in origin, due to photochemical reactions in the troposphere that generate about 5 kilograms per year.
- In most photochemical reactions the primary process is usually followed by so-called secondary photochemical processes that are normal interactions between reactants not requiring absorption of light.
- Still another type of photochemical reaction is the di-pi-methane rearrangement . " Unsymmetrical Substitution and the Direction of the Di-pi-Methane Rearrangement; Mechanistic and Exploratory Organic Photochemistry.
- This cycle is often a cause of smog through photochemical reactions that occur when strong concentrations of the pollutants in this cycle are exposed to solar radiation.
- During the spring, however, the sun comes out, providing energy to drive photochemical reactions and melt the polar stratospheric clouds, releasing considerable ClO, which drives the hole mechanism.
- Furthermore, photoacoustic measurements serve as a valuable research tool in the study of the heat evolved in photochemical reactions ( see : photochemistry ), particularly in the study of photosynthesis.
- In 1906 he received a Ph . D from the University of Leipzig for research at the Institute for Physical Chemistry, led by Wilhelm Ostwald on the kinetics of photochemical reactions.
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