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The A. C. Gilbert Company was an American toy company, once one of the largest in the world. Gilbert originated the Erector Set , which is a construction toy similar to Meccano in the rest of the world, and made chemistry sets, microscope kits, and a line of inexpensive reflector telescopes.
Gilbert cloud chamber, assembled An alternative view of kit contents. The lab contained a cloud chamber allowing the viewer to watch alpha particles traveling at 12,000 miles per second (19,000,000 m/s), a spinthariscope showing the results of radioactive disintegration on a fluorescent screen, and an electroscope measuring the radioactivity of different substances in the set.
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James Gilbert Baker (November 11, 1914 – June 29, 2005) was an American astronomer and designer of optics systems. ... "Planetary Telescopes", Applied Optics 2.2, 1963.
None are maintained in stock, and all typically have long lead times. When available on the used market, Astro-Physics' telescopes and mounts command high prices, telescopes often selling for multiples of their original cost. The company also offers a wide array of telescope, mount and imaging accessories available from stock.
This is a list of large optical telescopes. For telescopes larger than 3 meters in aperture see List of largest optical reflecting telescopes . This list combines large or expensive reflecting telescopes from any era, as what constitutes famous reflector has changed over time.
Online marketplace behemoth eBay said it plans to no longer accept American Express, citing what the company says are “unacceptably high fees” and that customers have other payment options to ...
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