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Plasma is one of the four fundamental states of matter, and was first described by chemist Irving Langmuir in the 1920s. It consists of a gas of ions – atoms which have some of their orbital electrons removed – and free electrons. Plasma can be artificially generated by heating a neutral gas or subjecting it to a strong electromagnetic field to the point where an ionized gaseous substance becomes increasingly electrically conductive. The resulting charged ions and electrons become influenced by long-range electromagnetic fields, making the plasma dynamics more sensitive to these fields than a neutral gas.
The HTC Evo Shift 4G is a smartphone developed by HTC Corporation and marketed as the concurrent/sequel to Sprint's flagship Android smartphone, running on its 4G WiMAX network. The smartphone launched on January 9, 2011.
A mobile application, also referred to as a mobile app or simply an app, is a computer program or software application designed to run on a mobile device such as a phone, tablet, or watch. Apps were originally intended for productivity assistance such as email, calendar, and contact databases, but the public demand for apps caused rapid expansion into other areas such as mobile games, factory automation, GPS and location-based services, order-tracking, and ticket purchases, so that there are now millions of apps available. Apps are generally downloaded from application distribution platforms which are operated by the owner of the mobile operating system, such as the App Store (iOS) or Google Play Store. Some apps are free, and others have a price, with the profit being split between the application's creator and the distribution platform. Mobile applications often stand in contrast to desktop applications which are designed to run on desktop computers, and web applications which run in mobile web browsers rather than directly on the mobile device.
References
- ↑ Thomas F. Hayne (January 1976), "Screen Controlled Corona Device (Scorotron) for Charging in a Xerographic Copier", IEEE Transactions on Industry Applications, IA-12 (1): 63–67, doi:10.1109/TIA.1976.349404, S2CID 15232361
- ↑ "scorotron", PR Glossary, Precision Roller, retrieved 2019-10-01
- ↑ Christopher I. Udoyea; Hamid Jafarzadehb (January 2010), "Xeroradiography: Stagnated after a Promising Beginning? A Historical Review", European Journal of Dentistry, 4 (1): 95–99, doi:10.1055/s-0039-1697816, PMC 2798798 , PMID 20046488,
...sensitization of the photoconductor plate in the charging station by depositing a uniform positive charge on its surface with a corona-emitting device called scorotron.
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