optical instrument sentence - optical instrument sentence in Hindi (11-20)

	11.	Iceland spar was much used in optical instruments until replaced by synthetic material.
	12.	He also made many of the optical instruments employed in sighting the guns.
	13.	Many new optical instruments with medical applications were invented during the 19th century.
	14.	Radio telescopes collect signals that help fill in gaps left by optical instruments.
	15.	Makers of optical instruments need to correct optical systems to compensate for aberration.
	16.	Lead glass, which is especially suitable for optical instruments, caused English glassmaking to prosper.
	17.	Jonathan Crary argues that optical instruments were more than toys.
	18.	He has worked to restore Galileo's optical instruments in Italy.
	19.	The Optical Museum Jena shows optical instruments from eight centuries.
	20.	Nikon also makes cameras, scanners, microscopes and other optical instruments.

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