单词 | Newtonian telescope |
例句 | Her chief amusement during her leisure hours was sweeping the heavens with a small Newtonian telescope. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z The twenty-foot Newtonian telescope is a marvel; and there sits Caroline, as of old, writing down calculations and observations. Her Season in Bath A Story of Bygone Days The first was made with a Newtonian telescope something less than seven feet focal length, a power of 222, and an aperture of four and a half inches. Sir William Herschel: His Life and Works He has his 20-foot Newtonian telescope in the open air, and mounted in his garden very simply and conveniently. Pioneers of Science In 1774 Herschel has the happiness of being able to examine the heavens with a Newtonian telescope of five English feet focus, entirely made by himself. Biographies of Distinguished Scientific Men He has his twenty-foot Newtonian telescope in the open air and mounted in his garden very simply and conveniently. Sir William Herschel: His Life and Works |
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