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Photochemical reaction | chemical reaction | Britannica.com
Photochemical reaction: Photochemical reaction, a chemical reaction initiated by the absorption of energy in the form of light. The consequence of molecules’ absorbing light is the creation of transient excited states whose chemical and physical properties differ greatly from the original molecules. These new chemical
Carotenoid | pigment | Britannica.com
Carotenoid: Carotenoid, any of a group of nonnitrogenous yellow, orange, or red pigments (biochromes) that are almost universally distributed in living things. There are two major types: the hydrocarbon class, or carotenes, and the oxygenated (alcoholic) class, or xanthophylls. Synthesized by bacteria, fungi,
What is Laser Therapy For Medical Patients | K-Laser
Drug Free, Surgery Free, Pain Free. K-Laser USA Class IV therapeutic lasers deliver specific red and near-infrared wavelengths of laser light to induce a photochemical reaction and therapeutic effect.
Zecca Cosmedical | Lasting beauty now.
The Zecca Cosmedical clinic is located within “The Fountain”, an architecturally restored heritage building in Alexandria.
Actinometer | Definition of Actinometer by Merriam-Webster
: any of various instruments for measuring the intensity of incident radiation especially: one in which the intensity of radiation is measured by the speed of a photochemical reaction
What is volatile organic compound (VOC)? definition and ...
2. Substance that will evaporate at temperature of use and which, by a photochemical reaction, will cause oxygen in the air to be converted into smog-promoting ozone under favorable climatic conditions. Commonly found in household, institutional, and industrial cleaning and maintenance products, and in building and finishing materials, VOCs are a significant contributor to sick building syndrome.
Chemistry for Kids: Chemical Reactions
A chemical reaction is a process where a set of substances undergo a chemical change to form a different substance. Where do chemical reactions occur? You may think that chemical reactions only happen in science labs, but they are actually happening all the time in the everyday world. Every time you ...
Sherwood Scientific Ltd
Sherwood Scientific Ltd is a Development and Manufacturing company producing a range of scientific instruments and apparatus with applications in many industries, education and research.