Assertion: light | /r/CapableOf | travel in straight lines
Facets:
Source sentences:
text: Light appears to travel in straight lines, travelling from light sources until it hits the surface of an object.
text: All light travels in a straight line unless something gets in the way and does one of these things:—
text: Later, around 300 BC, the ancient Greek physicist Euclid made a huge breakthrough when he posited light traveled in straight lines.