Exchange Exchange is a marketplace in which shares, options and futures on stocks, bonds, commodities, and indexes are traded. Principal U.S. stock exchanges are: New York Stock Exchange (NYSE), American Stock Exchange (AMEX), and National Association of Securities Dealers Automatic Quotation System (Nasdaq).
Chemiluminescence is a result of a chemical reaction. In fact, bioluminescence is a type of chemiluminescence. For example, the catalyzed reaction between luminal and hydrogen peroxide produces light. Electrochemiluminescence is a type of luminescence produced during an electrochemical reaction.n fact, bioluminescence is a type of chemiluminescence. For example, the catalyzed reaction between luminal and hydrogen peroxide produces light. Electrochemiluminescence is a type of luminescence produced during an electrochemical reaction.
Irradiation by X-ray is similar to irradiation by gamma rays in that less energetic packets of light (X-rays) are used. X-rays are generated by colliding accelerated electrons with a dense material (this process is known as bremsstrahlung-conversion), and therefore do not necessitate the use of radioactive materials.rradiation is used to delay the ripening of fruits and the sprouting of vegetables by slowing down the speed at which enzymes produced by the food can change the food. By halting or slowing down spoilage and slowing down the ripening of food, irradiation prolongs the shelf life of goods.