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<click!> This is your Captain...uhhh...we're now flying roughly twenty thousand feet above Toby's head...<click!>...<click!>...weather in Portland is sunny at about 45 degrees and the Mount Saint Helens volcano is roughly at our 2 o'clock position...uhh...which we'll be passing by in about 4 minutes. Drinks and a snack will be provided very shortly. Thank you for flying with us today and enjoy your flight this afternoon <click!> ÁEn English por el estupido, por favor! Toby Erkson air_cooled_nut@pobox.com <-- Please use this address for email '72 VW Squareback 1.6L bored and stroked to 2.0L, Berg five-speed '95 VW Jetta III GL 2.0L, P-Chipped, Jamex sport suspension Portland, Oregon, http://www.icbm.org/ >-----Original Message----- > I think that the truth lies somewhere in the middle -- >that typical >glass attenuates ultraviolet much more than visible, but that the >attenuation is not infinite. What fraction of the ultraviolet makes it >through typical glass at the thickness of a typical >windshield? A percent? >One part in a million? Also, "ultraviolet" just means higher >energy than >visible; you can bet that the transmittivity of glass, as with anything >else, will be a function of the frequency of the incident light. > > There is the tale of Feynman watching the Trinity >explosion through >the window of his truck... ------------------------------------------------------------------- Pitch in! Send your pledge of support! mailto:support@vwtype3.org