Assertion: newtonian telescope | /r/CapableOf | call newtonian reflector
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Source sentences:
text: The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror.
text: The Newtonian telescope, also called the Newtonian reflector or just the 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.