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Walgreens is an American company that operates the second-largest pharmacy store chain in the United States, behind CVS Health. [3] It specializes in filling prescriptions, health and wellness products, health information, and photo services. [4] It was founded in Chicago in 1901, and is headquartered in the Chicago suburb of Deerfield, Illinois. On December 31, 2014, Walgreens and Switzerland ...
Laboratory instruments are capable of trapping individual electrons as well as electron plasma by the use of electromagnetic fields. Special telescopes can detect electron plasma in outer space. Electrons are involved in many applications, such as tribology or frictional charging, electrolysis, electrochemistry, battery technologies, electronics, welding, cathode-ray tubes, photoelectricity ...