photo-degradation
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Photo-oxidation of polymers — Photo oxidation is the oxidation of a polymer surface in the presence of oxygen or ozone that is facilitated radiant energy such as UV or artificial light. This proces is often the the most significant component of weather degradation of polymers … Wikipedia
Photo numérique — Photographie numérique Cet article fait partie de la série Photographie … Wikipédia en Français
Polymer degradation — is a change in the properties tensile strength, colour, shape, etc of a polymer or polymer based product under the influence of one or more environmental factors such as heat, light or chemicals. These changes are usually undesirable, such as… … Wikipedia
Chemically assisted degradation of polymers — is a type of polymer degradation that involves a change of the polymer properties due to a chemical reaction with the polymer’s surroundings. There are many different types of possible chemical reactions causing degradation however most of these… … Wikipedia
Chemically Assisted Degradation of Polymers — is a type of polymer degradation that involves a change of the polymer properties due to a chemical reaction with the polymer’s surroundings. There are many different types of possible chemical reactions causing degradation however most of these… … Wikipedia
Thermal degradation of polymers — is molecular deterioration as a result of overheating. At high temperatures the components of the long chain backbone of the polymer can begin to separate (molecular scission) and react with one another to change the properties of the polymer.… … Wikipedia
Impression photo — Photographie numérique Cet article fait partie de la série Photographie … Wikipédia en Français
Hydroponie — Un chercheur de la NASA vérifie les oignons hydroponiques : à sa gauche se trouve de la laitue Bibb et à sa droite des radis … Wikipédia en Français
Photodegradation — is degradation of a photodegradable molecule caused by the absorption of photons, particularly those wavelengths found in sunlight, such as infrared radiation, visible light, and ultraviolet light. However, other forms of electromagnetic… … Wikipedia
Air purifier — An air purifier is a device which removes contaminants from air. Air purifiers are commonly marketed as being particularly beneficial to allergy sufferers and asthmatics, and at reducing second hand tobacco smoke. Use of purifiers Dust, pollen,… … Wikipedia
