Talk:Lighthouse
From Academic Kids
Could someone give a reference to a manned lighthouse, if there are any? I have heard from several sources that none remain, so some concrete reference for the claim that "a few" are still manned would be nice. --Andrew 07:09, 6 Jun 2004 (UTC)
I just uploaded a photo of the lens at the Cape Meares Lighthouse, but I don't know what kind of lens it is so I don't know where to put it (other than in the article on the lighthouse itself, but I thought it would be more useful as a lens example). Does someone know? Elf | Talk 03:27, 21 Jun 2004 (UTC)
- It appears to be a first-order Fresnel lens; see [1] (http://www.smithsonianmag.si.edu/smithsonian/issues99/aug99/object_aug99.html), [2] (http://www.midwestconnection.com/Lighthouses/information/lens.htm), [3] (http://www.seanspot.com/photos/oregon-trip/Light.htm), [4] (http://www.lanternroom.com/misc/freslens.htm). --Andrew 16:03, 22 Jun 2004 (UTC)
- Thanks for the research; I put it on Fresnel lens. Elf | Talk 16:22, 22 Jun 2004 (UTC)
