Assertion: telescope | /r/CapableOf | use mirror
Facets:
value: to reflect light
type: PURPOSE
value: to focus an image
type: PURPOSE
value: than lenses
type: OTHER
Source sentences:
text: All telescopes use either a lens or a mirror (some use both) to gather incoming light and to form an image from that light.
text: All telescopes which utilize both mirror and lens optics require some type of corrector lens when the primary mirror is a spherical surface design.
text: The cross shape visible on bright objects (such as stars) in Hubble images is a form of distortion that is visible in all telescopes that use a mirror rather than a lens to focus light rays.
text: A telescope that uses mirrors is called a reflecting telescope.
text: 1.Reflecting telescopes use mirrors while refracting telescopes use lenses.
text: He designed a telescope which used mirrors to reflect light; hence, this type is called a reflector.
text: Most telescopes today are reflectors, which use mirrors to reflect the light from an object.
text: Rather than lenses, these telescopes use mirrors to focus an image on the eyepiece.