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  2. Public address system - Wikipedia

    en.wikipedia.org/wiki/Public_address_system

    A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.

  3. Physician assistant - Wikipedia

    en.wikipedia.org/wiki/Physician_assistant

    A Physician Assistant or Physician Associate (PA) is a type of healthcare professional. While these job titles are used internationally, there is significant variation in training and scope of practice from country to country, and sometimes between smaller jurisdictions such as states or provinces. Depending on location, PAs practice semi ...

  4. Hospital emergency codes - Wikipedia

    en.wikipedia.org/wiki/Hospital_emergency_codes

    Hospital emergency codes are coded messages often announced over a public address system of a hospital to alert staff to various classes of on-site emergencies. The use of codes is intended to convey essential information quickly and with minimal misunderstanding to staff while preventing stress and panic among visitors to the hospital.

  5. Tannoy - Wikipedia

    en.wikipedia.org/wiki/Tannoy

    Actor Cyril Ritchard and three young women listen to the Tannoy public address system in 1948. Professional studio monitor Little Gold Monitor (c. 1990) with two-way-coaxial construction, meaning the tweeter for frequencies from 1.400 Hz and above is located independently in the center of the 30 cm bass driver.

  6. Local government in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Local_government_in...

    The definition of boroughs is a town or district that is an administrative unit, in particular. Nineteen boroughs have also adopted home rule charters. [9] Boroughs generally incorporate from areas of dense populations in a township. The areas generally had a train station and were centers of businesses and industrial activities.

  7. 1 Main Circuit - Wikipedia

    en.wikipedia.org/wiki/1_Main_Circuit

    1 Main Circuit (1MC) is the term for the shipboard public address circuits on United States Navy and United States Coast Guard vessels. This provides a means of transmitting general information and orders to all internal ship spaces and topside areas, and is loud enough that all embarked personnel are (normally) able to hear it.

  8. Performance appraisal - Wikipedia

    en.wikipedia.org/wiki/Performance_appraisal

    A performance appraisal, also referred to as a performance review, performance evaluation, [1] (career) development discussion, [2] or employee appraisal, sometimes shortened to "PA", [a] is a periodic and systematic process whereby the job performance of an employee is documented and evaluated. This is done after employees are trained about ...

  9. List of medical abbreviations: P - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    Meaning pĚ„: after (from Latin post) [1] [letter p with a bar over it] pH Potential of Hydrogen - Acidity of a fluid P: parturition (total number of live births) phosphorus pulse [1] post P OSM: plasma osmolality PA: posterior–anterior, posteroanterior pulmonary artery [[physician assistant or associate [2]]] psoriatic arthritis primary ...

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