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Q: The earliest telescopeswhich were constructed of two lenses in a long hollow tube are called?
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When was the earliest telescopes and how were constructed of two lenses in a long hollow tube?

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The earliest telescopes which were constructed of two lenses in a long hollow tube are called?

Telescopes were first used in 1952 by Oxford scientist Ron L. Hubbard--his predecessor, Mallory Hieney, first saw the planets with his device. Its called a fefracting telescope.


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