Talk:Alan Archibald Campbell-Swinton

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Tourists visitors to Edinburgh will be pleased to note that there is a plaque on a building at the east end of Queen St (Albyn Place), Edinburgh (near Charlotte SQ) to Archibald Campbell Swinton to commemorate the time he lived there. —Preceding unsigned comment added by 81.157.153.142 (talk) 16:43, 17 December 2007 (UTC)[reply]

Two Historical Notes

One of first all-electronic video camera tubes was invented in France by Edvard-Gustav Schoultz in 1921. He filed the French patent FR-539-613 on August 23, 1921. The patent was accepted on April 5, 1922, and published on June 28, 1922. You can find a copy of the original document in the web page [[1]]

The Image Dissector was also invented in Germany by Max Diekmann and Rudolf Hell in 1925. They filed the German patent DE-450-187 on April 5, 1925. The patent was accepted on September 15, 1927, and published on October 3, 1927. You can find a copy of the original document in the web page [[2]]

--134.153.204.160 (talk) 16:20, 24 July 2009 (UTC)[reply]

There seems little doubt that by the 1920s the tide of technology had caught up with Campbell-Swinton's vision and finally allowed others to put his ideas into practice. -- Derek Ross | Talk 17:52, 24 July 2009 (UTC)[reply]

Bibliographic references on Professor Campbell-Swinton and Television.

1) Letter to Nature suggesting the use of a modified CRT for transmitting moving images.

---A.A. Campbell-Swinton, Distant Electric Vision, Nature 78, 151 (18 June 1908)[[3]]

2) Presidential address to the Roentgen Society where the first all-electronic transmitting CRT is described with certain detail and a diagram[[4]].

---A.A. Campbell-Swinton, Presidential Address, J. Roentgen Soc. 8 (Jan. 1912), pp. 1--15.

---A.A. Campbell-Swinton, Fernsehen, Z. Schwach 6 (1912), pp. 149--153

... The image screen is a mosaic of insulated cubes of rubidium faced by a metal gauze screen with a space between filled with conductive gas, such as sodium vapour. The scanning beam charges the photoelectric elements negatively; those that are brightly illuminated release charges through the ionised gas to the gauze screen, or signal plate.

... certain ideas that have occurred to my imagination in the hope that they may lead others to the invention of a more practicable method of arriving at what is wanted.

3) Updated version of the original 1911 scheme.

---A.A. Campbell-Swinton, The possibilities of television with wire and wireless, Wireless World, 14 (Apr. 9 1924), pp. 51--56; (Apr. 16, 1924), pp. 82--84; (Apr. 23, 1924), pp. 114--118.

---Television, Mr. Campbell-Swinton's system, Engineer, 137 (Apr. 12, 1924), pp. 384--385.

---Mr. Swinton's views, Popular Wireless, (Apr. 12, 1924), p. 245.

4) Research article describing Campbell-Swinton's experiments on television.

---A.A. Campbell-Swinton, Electric Television, Nature 118, 590 (23 October 1926)[[5]]

...I actually tried some "not very successful" experiments in the matter of getting an electrical effect from the combined action of light and cathode rays incident upon a selenium-coated surface.... The transmitting apparatus consisted of a home-made Braun oscillograph in which a metal plate coated with selenium was substituted for the usual fluorescent screen, the image to be transmitted being thrown by a lens upon the selenium surface, and the end of the cathode ray beam being caused electromagnetically to traverse the proyected image. Experiments were also tried in receiving with a Braun tube which I purchase in Germany, but in its then "hard" form it proved very intractable.

--148.247.186.142 (talk) 00:20, 1 August 2009 (UTC)[reply]