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  1. Stephen Sekula (steve)'s status on Tuesday, 09-Aug-2016 22:01:43 EDT Stephen Sekula Stephen Sekula
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    Exploring lenses: how to measure their properties, how they form images, and how to make a telescope. #PHYS1311 https://t.co/2kK5Y0XIlc https://chirp.cooleysekula.net/attachment/14032
    Tuesday, 09-Aug-2016 22:01:43 EDT from chirp.cooleysekula.net permalink

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