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  2. Mediumship - Wikipedia

    en.wikipedia.org/wiki/Mediumship

    The medium mentally "hears" (clairaudience), "sees" (clairvoyance), and/or feels (clairsentience) messages from spirits. Directly or with the help of a spirit guide, the medium passes the information on to the message's recipient(s). When a medium is doing a "reading" for a particular person, that person is known as the "sitter".

  3. Medium - Wikipedia

    en.wikipedia.org/wiki/Medium

    Transmission medium, in physics and telecommunications, any material substance which can propagate waves or energy Active laser medium (also called gain medium or lasing medium), a quantum system that allows amplification of power (gain) of waves passing through (usually by stimulated emission)

  4. Transmission medium - Wikipedia

    en.wikipedia.org/wiki/Transmission_medium

    A transmission medium is a system or substance that can mediate the propagation of signals for the purposes of telecommunication. Signals are typically imposed on a wave of some kind suitable for the chosen medium.

  5. Sound - Wikipedia

    en.wikipedia.org/wiki/Sound

    Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an acoustician , while someone working in the field of acoustical engineering may be called an acoustical engineer . [ 3 ]

  6. Optical medium - Wikipedia

    en.wikipedia.org/wiki/Optical_medium

    In optics, an optical medium is material through which light and other electromagnetic waves propagate. It is a form of transmission medium . The permittivity and permeability of the medium define how electromagnetic waves propagate in it.

  7. Media ecology - Wikipedia

    en.wikipedia.org/wiki/Media_ecology

    Neil Postman states, "if in biology a 'medium' is something in which a bacterial culture grows (as in a Petri dish), in media ecology, the medium is 'a technology within which a [human] culture grows.'" [5] [6] [7] In other words, "Media ecology looks into the matter of how media of communication affect human perception, understanding, feeling ...

  8. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

    www.aol.com/products/utilities/ad-free-mail

    SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...

  9. Broadcasting - Wikipedia

    en.wikipedia.org/wiki/Broadcasting

    Examples applying it to "one-to-many" radio transmissions of an individual station to multiple listeners appeared as early as 1898. [5] Over-the-air broadcasting is usually associated with radio and television, though more recently, both radio and television transmissions have begun to be distributed by cable (cable television). The receiving ...