Question 1: The first known practically functioning telescopes were invented in the ________ at the beginning of the 17th century. | |||
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Question 2: An optical telescope gathers and focuses light mainly from the visible part of the ________ (although some work in the infrared and ultraviolet). | |||
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Question 3: ________ telescopes refrain from focusing completely and use coded aperture masks: the patterns of the shadow the mask creates can be reconstructed to form an image. | |||
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Question 4: A telescope is an instrument designed for the observation of remote objects by the collection of ________. | |||
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Question 5: The mirrors are usually a section of a rotated parabola and a hyperbola, or ________. | |||
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Question 6: "Telescopes" can refer to a whole range of instruments operating in most regions of the ________. | |||
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Question 7: ________ | |||
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Question 8: ________ | |||
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Question 9: Their development is credited to three individuals: Hans Lippershey and Zacharias Janssen, who were spectacle makers in Middelburg, and Jacob Metius of ________. | |||
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Question 10: [6] In 1668, ________ built the first practical reflecting telescope, which bears his name, the Newtonian reflector. | |||
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