Assertion: telescope's purpose | /r/HasProperty | to gather light
Facets:
Source sentences:
text: The purpose of the mirror is to gather light, which is sent to another mirror before it hits the eyepiece.
text: The main purpose of all types of telescopes is to collect light, and each type of scope collects light in a different way than the rest.
text: The main purpose of a telescope is to gather light, i.e. to collect and focus photons.
text: The purpose of the main optical tube is to gather light.
text: The primary purpose of a telescope is to gather light.
text: The main purpose of a telescope is to collect light.