Talk:Opaque projector

Education Low‑importance

	Education portal This article is within the scope of WikiProject Education, a collaborative effort to improve the coverage of education and education-related topics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.EducationWikipedia:WikiProject EducationTemplate:WikiProject Educationeducation articles
Low	This article has been rated as Low-importance on the project's importance scale.

Technology

This article is within the scope of WikiProject Technology, a collaborative effort to improve the coverage of technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.TechnologyWikipedia:WikiProject TechnologyTemplate:WikiProject TechnologyTechnology articles

Visual arts

This article is within the scope of WikiProject Visual arts, a collaborative effort to improve the coverage of visual arts on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Visual artsWikipedia:WikiProject Visual artsTemplate:WikiProject Visual artsvisual arts articles

Episcope

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

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"?

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

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]