Assertion: telescope | /r/CapableOf | operate in the visible
Facets:
Source sentences:
text: A telescope that operates in the visible, at a wavelength of 500 nm (nanometers, 1 nm = 10-9 m) in the visible has a resolving power that is 10 times better than one of the same diameter that operates at 5 microns in the infrared (1 micron = 10-6 m).