Homework Help: physics 101

Posted by Topher on Monday, February 22, 2010 at 12:53am.

No glass is perfectly transparent. Mainly because of reflections, about 90% of light passes through an average sheet of clear windowpane. The 10% loss is not noticed through a single sheet, but through several sheets it is apparent. How much light is transmitted by two sheets?

physics 101 - bobpursley, Monday, February 22, 2010 at 5:21am
what is .9*.9?

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