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photophone

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photophone
photophone (ˈfəʊtəʊfəʊn) [f. Gr. ϕῶς light, photo- + -ϕωνος sounding, sounder, ϕωνή voice, sound.] Any apparatus in which sounds are transmitted by light; esp. that invented by A. Graham Bell and Sumner Tainter in 1880, by means of which sound-vibrations are conveyed to a distance by means of a beam... Oxford English Dictionary
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Photophone
Bell believed the photophone was his most important invention. "The Photophone". Appleton's Journal, Vol. 10 No. 56, New York, February 1881, pp. 181–182. Bidwell, Shelford. "The Photophone". wikipedia.org
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what is a photophone
The photophone is a telecommunications device that allows transmission of speech on a beam of light. Bell believed the photophone was his most important invention.
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RCA Photophone
In April 1928, RCA Photophone Inc. was created as a subsidiary of RCA (itself then a GE subsidiary) to commercially exploit the Photophone system. Photophone brand abandoned The re-use of the Photophone brand was relatively short-lived. wikipedia.org
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thermophone
thermophone (ˈθɜːməʊfəʊn) [f. as prec. + Gr. ϕωνή voice, sound, after telephone.] An apparatus in which sonorous vibrations of a diaphragm are produced by heat-rays.1878 Th. Wiesendanger in Engineer XLVI. Nov. 335 The Thermophone. A new source of sound for the telephone. 1881 A. G. Bell in Nature 12... Oxford English Dictionary
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Pallophotophone
The RCA Photophone sound-on-film system for motion pictures was later derived from it. It was marketed by RCA (then a GE subsidiary) as RCA Photophone. wikipedia.org
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Roberto Landell de Moura
working of the Photophone, we can use the Radiographone." This primarily describes a photophone configuration, for which "clear actinic light is absolutely necessary". wikipedia.org
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Wireless telephone
Mobile phone, a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area Photophone wikipedia.org
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雷电华电影
1927年末，一直寻找Photophone买家的时任RCA总经理大卫·沙诺夫接触老约瑟夫·P·肯尼迪，希望肯尼迪的中等规模制片厂能采用这个系统，而双方的谈判使得通用电气收购票房电影大量股份。 沙诺夫明显有所计划，目标让公司能占据电影业的中心位置，将Photophone的收益最大化，之后再参照其他好莱坞电影巨头的做法，拿下一连串放映场地。此时肯尼迪也开始调查收购放映场地的可能性。在现场歌舞杂耍表演日渐式微时成立的连锁戏院品牌也打算过渡到电影业。 wikipedia.org
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Telectroscope
Bell and his assistant Charles Sumner Tainter which was christened with the ambiguous name photophone. The photophone was actually a wireless optical telephone that conveyed audio conversations on modulated lightbeams, the precursor for today's fiber-optic wikipedia.org
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Optical communication
Photophone The photophone (originally given an alternate name, radiophone) is a communication device which allowed for the transmission of speech on The master patent for the photophone ( Apparatus for Signalling and Communicating, called Photophone), was issued in December 1880, many decades before wikipedia.org
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Remote infrared audible signage
The principle of Alexander Graham Bell's photophone led to development of devices capable of transmitting/decoding infrared waves in systems ranging from wikipedia.org
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Gigolettes of Paris
The film used RCA Photophone Recording. wikipedia.org
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Movietone sound system
It and the later RCA Photophone system were interchangeable in most respects. See RCA Photophone for technical details and lists of the industry adopters. wikipedia.org
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Padma Theatre
Padma was renovated in 1971 and air-conditioned with photophone film projector. The renovated theatre was opened by Tamil actor Kamal Hassan. wikipedia.org
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