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Post date: May 10, 2012 1:10:35 PM
Bell ringer (verbal): What is a lens? What devices do you know of that use lenses?
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Page 578: 1-6
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Post date: May 10, 2012 1:10:35 PM
Bell ringer (verbal): What is a lens? What devices do you know of that use lenses?
19-2 notes
Page 578: 1-6