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File:Edison speech, 1920s.ogv

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Edison_speech,_1920s.ogv ‎(Ogg multiplexed audio/video file, Theora/Vorbis, length 2 min 10 s, 400 × 288 pixels, 357 kbps overall, file size: 5.52 MB)

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Thomas Edison talking about the invention of the light bulb, late 1920s.

Newsreel clip from the Motion Picture Division of the U.S. National Archives

Transcript[edit]

English: "Before starting experiments on the incandescent electric light system, many memorndums were drawn up as to a general system that would permit a subdivision of the light into small units analogous to gas jets and with commercial economy superior to the prevailing gas system. The thought was, if it was to be successful, all the units must be worked in multiply. This necessitated the creation of lamps of very high resistance to diminish the enormous investment in copper if necessary, if lower resistance lamps were to be used. (For the safety??) This necessitated identifying hair-like filaments of high air-resistance material. On October twenty-first 1871, numerous experiments resulted in the production of a small unit lamp of comparatively enormous resistance. The filament being? under conditions of great stability after this result, I knew the problem approached commercial solution. As these lamp experiments continued, other parts of the general system was actively experimented upon. The dynamo, as then invoked, was extremely inefficient; the loss approaching fifty percent due to some misunderstanding among electricians which I never comprehended. However, these experiments produced a dynamo of which ninety percent of the energy was useful. Then meters for measuring the current were used by thousands of customers and also a host of accessories like underground conduit, circuits, sockets, et cetera were necessary to make a complete system of distribution, all of which was accomplish..."


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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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Media of the day This file was selected as the media of the day for 4 November 2009. It was captioned as follows:
English: Thomas Edison talking about the invention of the light bulb, late 1920s (video)
Other languages
Čeština: Thomas Alva Edison hovoří o vynálezu žárovky, konec dvacátých let 20. století (video)
English: Thomas Edison talking about the invention of the light bulb, late 1920s (video)
Español: Thomas Edison hablando sobre la invención de la bombilla, finales de la década de 1920 (vídeo)
Македонски: Томас Едисон зборува за изумувањето на светилката, крајот на 1920-тите (видеоснимка)
Polski: Thomas Alva Edison opowiada o wynalezieniu żarówki, późne lata 20. XX wieku
Tiếng Việt: Thomas Edison đang nói về sự phát minh ra bóng đèn, vào cuối thập niên 20 của thế kỉ 19 (video)
中文（简体）：1920年艾迪生讲解发明电灯的录象
中文（繁體）：1920年代後期湯瑪斯·愛迪生講解發明電燈泡的影片

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Date/TimeThumbnailDimensionsUserComment
current23:50, 30 April 20052 min 10 s, 400 × 288 (5.52 MB)Brian0918 (talk | contribs)Thomas Edison talking about the invention of the light bulb, late 1920s. Newsreel clip from the Motion Picture Division of the U.S. National Archives {{PD}} Category:Video

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Format Bitrate Download Status Encode time
VP9 240P 196 kbps Completed 11:46, 25 August 2018 1 min 17 s
Streaming 240p (VP9) 115 kbps Completed 15:44, 17 December 2023 1.0 s
WebM 360P 562 kbps Completed 07:03, 30 November 2023 20 s
Streaming 144p (MJPEG) 1 Mbps Completed 16:53, 9 November 2023 4.0 s
Stereo (Opus) 80 kbps Completed 08:46, 22 November 2023 3.0 s
Stereo (MP3) 128 kbps Completed 06:21, 2 November 2023 4.0 s

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