Raman spectroscopy is dependent on scattering of light. When light interacts with matter, energy exchange can take place through absorption, simulated emission, Raman scattering or spontaneous emission. In Raman scattering, the emitted photons have less energy and lower frequency in comparison with the absorbed photons. Some energy of the emitted photons is transferred to the molecules. Raman spectroscopy is a method which collects the chemical fingerprints associated with molecules. Every molecule has different levels of vibrational energy and the emitted photons experience shift in their wavelengths. The wavelength shifts are collected,examined and analyzed for sample identification. Raman spectroscopy ...
Essays on Spectrometer
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Introduction
The kinetic characteristics are important for the design of chemical engineering processes. They allow assessing the time required for the reaction and choosing the temperature range suitable for the reaction. The reaction path is observed by measurments the transmittance of the Crystal Violet solution that reacts with sodium hydroxide. The concentration, and the color of the solution changes with the reaction flow, and this is measured by the spectrophotometer.
The data are plotted as concentration - time and logarithm concentration time, and the reaction rate is:
Rate = [Crystal Violet] [Sodium Hydroxide]. Using the excess concentration of one of the reagents, the reaction rate with respect to the other reagent is found from logarithmic plot (Rahul & Chakrabarti ...
Spectroscopy is the scientific technique that is used to measure the movement of light, whether it is emitted, absorbed, or scattered because of certain materials (Wiggins). These materials can be studied using this technique. Spectrometers are the devices that make this process possible. These devices break light into its spectral components and transform them into functions of wavelength or signals in order for us to observe and to analyze them in our computers (B&W Tek). Since light can be broken down into several parts, these spectrometers act like a prism wherein it differentiates each color from one another. With ...
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ORDER AN ESSAYThe significant astronomical aspect that was chosen for discussion in this essay is the NEAR Shoemaker landing on Asteroid Eros. NEAR is the acronym for The Near Earth Asteroid Rendezvous and was named in the honor of Gene Shoemaker, one of the most renowned planetary scientist. This project was actually planned for studying the 422 Eros, the near earth Asteroid. 422 Eros is one of the largest asteroids of near Earth. This astronomical operation was the first mission to orbit an asteroid and also the first to land on an asteroid’s surface. The fundamental scientific goals of this ...
