Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: device that reflects radiation
Categories: device
Within this category: mirror, parabolic reflector, solar dish
How to sign: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece
"Isaac Newton invented the reflecting telescope in 1668";
Similiar / Same: reflecting telescope
Categories: optical telescope
Within this category: Cassegrainian telescope, coude telescope, Herschelian telescope, Maksutov telescope, Newtonian telescope, Schmidt telescope
