The Collected Works of Olbers

  title={The Collected Works of Olbers},
  author={D. J.},
GERMANY has not produced as many amateur astronomers as England has, but among them the man whose complete writings have now been published occupies a most remarkable place. Olbers was an amateur, but his work was that of a professional astronomer. Though occupied all day in the extensive practice of a physician, he devoted his nights to searching for comets, making micrometric observations of these bodies, whether found by himself or others, with the annular micrometer, an instrument the… Expand
Improved Single Barrier Ozone Chamber
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