Assertion: reflecting telescope's mirror | /r/CapableOf | collect light
Facets:
value: from the object
type: OTHER
value: from a large area
type: LOCATION
Source sentences:
text: In illumination applications, concave mirrors are used to gather light from a small source and direct it outward in a beam as in torches, headlamps and spotlights, or to collect light from a large area and focus it into a small spot, as in concentrated solar power.
text: Ignoring blurring of the image by turbulence in the atmosphere (atmospheric seeing) and optical imperfections of the telescope, the angular resolution of an optical telescope is determined by the diameter of the primary mirror or lens gathering the light (also termed its "aperture").
text: In a reflector telescope, the primary mirror is placed at the back of the telescopic tube and captures the light from the object that is under observation.
text: The Gregorian telescope consists of two concave mirrors; the primary mirror (a concave paraboloid) collects the light and brings it to a focus before the secondary mirror (a concave ellipsoid) where it is reflected back through a hole in the centre of the primary, and thence out the bottom end of the instrument where it can be viewed with the aid of the eyepiece.
text: Large mirrors allow reflecting telescopes to gather more light than refracting telescopes do.
text: It is a system of (smaller) mirror which collects and delivers all the light sent by (aperture/main) mirror.
text: The objective lens or mirror collects light and brings it to focus creating an image.