bn:00057583n
Noun Concept
Categories: Isaac Newton, English inventions, Telescope types, 1668 in science
EN
Newtonian telescope  Newtonian reflector  Newton telescope  Newtonian reflectors
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EN
The Newtonian telescope, also called the Newtonian reflector or just a Newtonian, is a type of reflecting telescope invented by the English scientist Sir Isaac Newton, using a concave primary mirror and a flat diagonal secondary mirror. Wikipedia
A type of reflecting telescope Wikipedia Disambiguation
Type of reflecting telescope Wikidata
A type of reflecting telescope using a concave primary mirror and a flat diagonal secondary mirror. Wiktionary
WordNet 3.0 & Open English WordNet
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