4 Results for : photophone

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    Photophone
    Erscheinungsdatum: 12/2009, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Photophone, Titelzusatz: Free-Space Optical Communication, Fiber-Optic Communication, History of Telecommunication, Laser Microphone, Wireless, Videophone, Fax, Camera Phone., Redaktion: Surhone, Lambert M. // Timpledon, Miriam T. // Marseken, Susan F., Verlag: Betascript Publishers, Sprache: Englisch, Rubrik: Technik // Sonstiges, Seiten: 96, Informationen: Paperback, Gewicht: 159 gr, Verkäufer: averdo
    • Shop: averdo
    • Price: 31.59 EUR excl. shipping
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    Senioren-Telefon Geemarc PhotoPhone 100 Weiß
    Einfaches, modernes Telefon mit max. + 30dB Hörerlautstärke, inklusive acht Fotowahltasten.
    • Shop: aktivwelt
    • Price: 44.99 EUR excl. shipping
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    Wireless
    Erscheinungsdatum: 12/2009, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Wireless, Titelzusatz: Two-Way Radio, Mobile Phone, Personal Digital Assistant, Wireless Network, Global Positioning System, Garage Door Opener, Satellite Television, Photophone, History of Radio, Wi-Fi., Redaktion: Surhone, Lambert M. // Timpledon, Miriam T. // Marseken, Susan F., Verlag: Betascript Publishers, Sprache: Englisch, Rubrik: Technik // Sonstiges, Seiten: 188, Informationen: Paperback, Gewicht: 296 gr, Verkäufer: averdo
    • Shop: averdo
    • Price: 47.39 EUR excl. shipping
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    Alexander Graham Bell , Hörbuch, Digital, ungekürzt, 49min
    The biography of the teacher of the deaf who, through his knowledge of music, human speech, and hearing, invented the telephone. Alexander Graham Bell was a pioneer in many fields that aided communication over distances. He worked tirelessly to help the deaf communicate with others (even Helen Keller came to him for help). After the telephone, Bell invented the photophone (a device that uses a beam of light to transmit sound wirelessly), and developed phonographic sound recording methods. As a spin-off from his work with the telephone, Bell also invented the metal detector. A supporter of man's "Pioneering Spirit", Bell became one of the founders of the National Geographic Society. Bell felt that flight would be an effective way to bring people together. Forming the Aerial Experiment Association and working with a team of aviation pioneers such as Glenn H. Curtiss, Bell's Red Wing was able to make the first public demonstration of powered human flight in North America. Unlike the deadly Wright Flyer, the Red Wing could take-off under its own power without the need of a supplementary catapult, and could make turns safely. One of Bell's aviation inventions, the aileron, is used on all aircraft to this day. Bell also experimented with hydrofoils, culminating in the marine speed record setting HD-4. ungekürzt. Language: English. Narrator: John Mulligan. Audio sample: https://samples.audible.de/bk/clbt/000021/bk_clbt_000021_sample.mp3. Digital audiobook in aax.
    • Shop: Audible
    • Price: 9.95 EUR excl. shipping

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