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  2. Alternating current - Wikipedia

    en.wikipedia.org/wiki/Alternating_current

    Alternating current ( AC) is an electric current that periodically reverses direction and changes its magnitude continuously with time, in contrast to direct current (DC), which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy ...

  3. List of AC/DC members - Wikipedia

    en.wikipedia.org/wiki/List_of_AC/DC_members

    AC/DC are an Australian rock band from Sydney. Formed in November 1973, the group originally consisted of vocalist Dave Evans, lead guitarist Angus Young, rhythm guitarist Malcolm Young (his older brother), bassist Larry Van Kriedt and drummer Colin Burgess. The band's current touring lineup features Angus Young, vocalist Brian Johnson (from ...

  4. Richmond American University London - Wikipedia

    en.wikipedia.org/wiki/Richmond_American...

    Website. richmond .ac .uk. Richmond American University London is a private university in London, United Kingdom. Richmond was founded in 1972, by British educator Cyril Taylor . The university awards US degrees from the American state of Delaware, [6] where Richmond is accredited by the Middle States Commission on Higher Education.

  5. Blackboard - Wikipedia

    en.wikipedia.org/wiki/Blackboard

    Uses. Reusable writing surface on which text or drawings are made. A blackboard or a chalkboard is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.

  6. Pmi Diagnostic Imaging in Palos Heights, IL - WebMD

    doctor.webmd.com/practice/pmi-diagnostic-imaging...

    Pmi Diagnostic Imaging. Claim your practice. 24 Specialties 24 Practicing Physicians. (0) Write A Review. Pmi Diagnostic Imaging. 7600 W College Dr Ste 3 Palos Heights, IL 60463. (708) 923-2577. OVERVIEW.

  7. Chalkboard scraping - Wikipedia

    en.wikipedia.org/wiki/Chalkboard_scraping

    Chalkboard scraping. Scraping a chalkboard (also known as a blackboard) with one's fingernails produces a sound and feeling which most people find extremely irritating. The basis of the innate reaction to the sound has been studied in the field of psychoacoustics (the branch of psychology concerned with the perception of sound and its ...

  8. Blackboard (design pattern) - Wikipedia

    en.wikipedia.org/wiki/Blackboard_(design_pattern)

    Blackboard (design pattern) In software engineering, the blackboard pattern is a behavioral design pattern [1] that provides a computational framework for the design and implementation of systems that integrate large and diverse specialized modules, and implement complex, non-deterministic control strategies. [2] [1]

  9. AC-to-AC converter - Wikipedia

    en.wikipedia.org/wiki/AC-to-AC_converter

    An AC-AC converter with approximately sinusoidal input currents and bidirectional power flow can be realized by coupling a pulse-width modulation (PWM) rectifier and a PWM inverter to the DC-link. The DC-link quantity is then impressed by an energy storage element that is common to both stages, which is a capacitor C for the voltage DC-link or ...