Assertion: microscope's light | /r/HasProperty | passed through medium
Facets:
Source sentences:
text: A medium with a lower refractive index such as glass to air, it normally speeds up the light penetration and making light bend away from the normal and when light is passed through a medium with a greater refractive index such as air to glass, it normally slows down and bends towards the normal, perpendicularly to the surface.