Talk:Opaque projector

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Episcope[edit]

Hello, The picture shown in this article is not an episcope but a magic lantern. Episcopes and epidiascopes don't have an 'open' back. Kind regards, Erwin —Preceding unsigned comment added by 62.235.145.25 (talk • contribs) 09:47, 14 August 2008 (UTC)[reply]

{{refneeded}} -Kieran (talk) 00:03, 30 June 2009 (UTC)[reply]

how to make a epidiascope? —Preceding unsigned comment added by 115.240.166.247 (talk) 10:33, 17 January 2010 (UTC)[reply]

I'm pretty sure that episcope or one very much like it was still in use when I attended Mineralogy lectures in the Sedgwick building in 1964. It had a open carbon arc light source, and sometimes the electrodes would fizzle mid lecture, forcing the lecturer to come down and re-strike the arc.96.54.42.226 (talk) 05:58, 13 February 2013 (UTC)[reply]

A modern opaque projector image[edit]

This article could use a picture of a more modern style opaque projector type such as the flatbed model shown at the following link: http://www.jerrysartarama.com/discount-art-supplies/Projectors-and-Lightboxes/Pictoscope-Opaque-Projector.htm —Preceding unsigned comment added by Cab88 (talk • contribs) 14:06, 13 April 2010 (UTC)[reply]

"Modern"?[edit]

Isn't it time to remove the word 'modern' from the phrase 'Opaque projectors are not as common as the modern "overhead"'? Overhead projectors are not exactly common in these modern times...

MarcMFresko (talk) 16:12, 7 January 2013 (UTC)[reply]

The 'History' section is completely borked[edit]

There is nothing in the history section even dimly related to the history of these things. When? Who? Where? would all be good questions to have answers to. — Preceding unsigned comment added by 69.181.168.139 (talk) 21:40, 4 February 2013 (UTC)[reply]