All translations
From Pathfinder Wiki
Enter a message name below to show all available translations.
Found 2 translations.
| Name | Current message text |
|---|---|
| h English (en) | ===Slide Projector=== [[Image:Diaprojektor beleuchtungssystem IMGP1044.jpg|thumb|600px|Inside a slide projector]] {{clear}} A slide projector is an opto-mechanical device to view photographic slides. It has four main elements: a fan-cooled electric light bulb or other light source, a reflector and "condensing" lens to direct the light to the slide, a holder for the slide and a focusing lens. A flat piece of heat absorbing glass is often placed in the light path between the condensing lens and the slide, to avoid damaging the latter. This glass transmits visible wavelengths but absorbs infrared. Light passes through the transparent slide and lens, and the resulting image is enlarged and projected onto a perpendicular flat screen so the audience can view its reflection. ===Opaque Projector=== [[Image:Episcope.jpg|right|thumb|200px|An episcope which was used in a University of Cambridge lecture hall in the late 1800s]] The '''opaque projector''', '''epidioscope''', '''epidiascope''' or '''episcope''' is a device which displays opaque materials by shining a bright lamp onto the object from above. A system of mirrors, prisms and/or imaging lenses is used to focus an image of the material onto a viewing screen. Because they must project the reflected light, opaque projectors require brighter bulbs and larger lenses than overhead projectors. Care must be taken that the materials are not damaged by the heat generated by the light source. Opaque projectors are not as common as the modern "overhead". |
| h Spanish (es) | {{clear}} |
