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![Zeiss Leveling Instrument NI.B., c. 1940 - Carl Zeiss, Jena. No. 45509, lacquered [...] | lot 416 | Sciences & technologies, Antiquités de bureau, Radio, Automates & beaux jouets at Auction Team Breker | Auction.fr | English](https://s3-eu-west-1.amazonaws.com/auctionmediaphotos/a/8/c/1618493529339107.jpg "Zeiss Leveling Instrument NI.B., c. 1940 - Carl Zeiss, Jena. No. 45509, lacquered [...] | lot 416 | Sciences & technologies, Antiquités de bureau, Radio, Automates & beaux jouets at Auction Team Breker | Auction.fr | English")
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When a laser beam passes through a collimator using a lens, does the ratio of the divergence angle always match the ratio of the beam diameter? Does this hold true even when
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