Archived posting to the Leica Users Group, 2011/09/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]As an ex-physicist (Ph.D. in 1951, forgot most of it by now), I'a say a lens will not do a bit of good. The light from the sun can be considered fully collimated. The farther you remove the paper from the prism, the larger, but fainter, will be your rainbow. Herb >Thanks Guys! > >I tried George's method and got a wee spectrum. I'll try to focus >the light with a lens later. > >Peter > >_______________________________________________ >Leica Users Group. >See http://leica-users.org/mailman/listinfo/lug for more information -- Herbert Kanner kanner at acm.org 650-326-8204 Do not meddle in the affairs of cats, for they are subtle and will pee on your computer!