Assertion: reflecting telescope's mirror | /r/HasProperty | supported
Facets:
value: from the back
type: OTHER
value: from the back side
type: MANNER
value: opposite its reflecting face
type: OTHER
Source sentences:
text: Plus, as mirrors can be supported from behind, they can be made larger than lenses without the Sag problem.
text: In contrast, a mirror can be supported by the whole side opposite its reflecting face, allowing for reflecting telescope designs that can overcome gravitational sag.
text: In a telescope designed with mirrors, only the front surface has to be manufactured to a precise shape, and the mirror can be supported from the back.
text: Mirrors can be supported from behind, and thus can be made very large.
text: A mirror can be supported from the back, so it is less subject to sagging.
text: Loss to a secondary mirror is made up by the fact that large mirrors can be supported from the back side.
text: A mirror, on the other hand, can be supported by the whole side opposite to its reflecting face.