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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24
Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
matte finish
Approx 15cm x 10cm x 7cm
Butterfly specimen (Prothoe calydonia - verso - Malaysia) mounted behind glass on acid-free paper in a black wooden shadow box
One of a kind hand-cut Peruvian opal set in claws of 14kt rose & white gold
Solar Radiometer Size:Small matte finishInvented in 1873 by chemist & experimenter Sir William Crookes, the solar radiometer was the first way in which man could demonstrate light as an energy source. The radiometer consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of metal vanes which are mounted on a spindle. When exposed to sunlight, artificial light, or infrared radiation, the vanes turn with no apparent motive power, the dark sides retreating from the
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