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by Science Source
$17.00
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The Center for Disease Control has recommended the use of cloth face masks to help fight the spread of COVID-19.
This face mask is made from 100% polyester and includes two ear loops with adjustable grommets for a comfortable fit.
The printed area of the mask is approximately 7" wide by 5" tall. This mask fits well on adult mens' faces without the grommets but, due to the adjustable grommets, can be worn snuggly by adult women, as well.
Please note - this is NOT a surgical grade mask. It is not intended for any medical or commercial uses, whatsoever. It is a simple, cloth mask designed for everyday use to cover your mouth when out in public. The mask should not be used in any medical or surgical setting.
We make no warranties that the mask prevents infections or the transmission of viruses or diseases.
Design Details
Hevelius observing the night sky, 1647. Johannes Hevelius (1611-1687) was a Polish astronomer. He is remembered as the founder of founder of lunar... more
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Hevelius observing the night sky, 1647. Johannes Hevelius (1611-1687) was a Polish astronomer. He is remembered as the founder of founder of lunar topography, who also described ten new constellations (seven of which are still recognized by astronomers). Hevelius is regarded as having been the greatest astronomer in Poland after Copernicus. He was also a councilor, mayor of Danzig and was taught the art of brewing from his father, a wealthy merchant of Bohemian origin. Throughout his life, Hevelius took a leading part in municipal administration, but his chief interest was astronomy. In 1641 he built an observatory on the roofs of his three connected houses. The observatory was known by the name Sternenburg or "Star Castle". Hevelius made observations of sunspots, 1642-1645, devoted four years to charting the lunar surface and discovered the Moon's libration in longitude. He discovered four comets, in 1652, 1661,1672 and 1677. These discoveries led to his thesis that such bodies revolv...
$17.00
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