Assertion: microscope's light | /r/CapableOf | travel in straight lines
Facets:
Source sentences:
text: The 10th century Arab scholar Al-Hazen hypothesized that light traveled in straight lines and that vision depended on light reflecting from objects and into the viewer's eyes.
text: In considering the action of lenses, the wave-like properties can often be ignored and light is considered to travel in straight lines often termed rays.