Assertion: newtonian telescope's design | /r/Synonym | a galilean telescope
Facets:
value: commonly
type: TEMPORAL
Source sentences:
text: Galileo's telescope used a convex objective lens and a concave eye lens, a design is now called a Galilean telescope.
text: The original design Galileo Galilei came up with in 1609 is commonly called a Galilean telescope.