what are the similarities and dissimilarities between fluorescence and phosphorescence?
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However, the two terms don't mean the same thing and don't occur the same way. In both fluorescence and phosphorescence, molecules absorb light and emit photons with less energy (longer wavelength), but fluorescence occurs much more quickly than phosphorescence and does not change the spin direction of the electrons.
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Fluoroscopy is similar to radiography and X-ray computed tomography (X-ray CT) in that it generates images using X-rays. The original difference was that radiography fixed still images on film whereas fluoroscopy provided live moving pictures that were not stored.
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Fluorescence. ... Materials used as pigments in paint or dye that exhibit such fluorescence appear brighter under sunlight because they absorb invisible UV light and re-emit it at visible wavelengths.
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In the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. ... The energy generated by the hydrogen ion stream allows ATP synthase to attach a third phosphate to ADP, which forms a molecule of ATP in a process called photophosphorylation.
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UV/vis absorption spectroscopy typically measures absorption as a function of wavelength in nm, while IR spectroscopy typically measures transmittance as a function of wavenumber in cm-1. Fluorescence spectroscopy measures the photons that are emitted from an excited sample.
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Answer Expert Verified. D. ATP (Adenosine TRIphosphate) has one more phosphate group and is higher in energy than ADP (Adenosine DIphosphate). TRI means three, DI means two, so the names of the molecules tell you there's one more phosphate in ATP than in ADP.
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For example, the high quantum efficiency of photochemistry in limiting light results in a decrease, or quenching, of fluorescence that is termed photochemical quenching (qP). Non-photochemical processes that dissipate excitation energy also quench Chl fluorescence and are collectively called NPQ (or qN).
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The difference in the 2 molecules is the way they store energy. When a cell has energy available, it can store small amounts of energy by adding a phosphate group to and ADP molecule. This will then produce an ATP molecule. ATP will release or give off energy when it releases a phosphate molecule.
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Answer and Explanation: Physical and chemical changes are similar because both processes result in something that looks different after the change.
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Yes, they might have the same energy. If light is defined by power intensity then all colors of same intensity have the same energy if consumed at the same length of time. The only difference is that light of shorter wavelength (into the blue and violet) consists of fewer photons, thus the energy per photon is higher.
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The difference between the units lumen and lux is that the lux takes into account the area over which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux.
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Red phosphorous is just P. This is because- unlike white phosphorous which is made up of 4 P atoms per molecule- its structure is made of a long chain of P-P bonds like a polymer.
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Answer and Explanation: ADP (adenosine diphosphate) and ATP (adenosine triphosphate) differ in the number of phosphate groups found in each molecule. ATP contains three...
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['A, the Absorption Coefficient,', 'C, the concentration of the absorbing species,', 'L, the pathlength through which the ray of light passes from source to detector.']
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The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart.
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Thus, ATP is the higher energy form (the recharged battery) while ADP is the lower energy form (the used battery). When the terminal (third) phosphate is cut loose, ATP becomes ADP (Adenosine diphosphate; di= two), and the stored energy is released for some biological process to utilize.
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The difference is that the glow of fluorescence stops right after the source of excitatory radiation is switched off, whereas for phosphorescence, an afterglow with durations of fractions of a second up to hours can occur [6,7].