Assertion: lens's point | /r/HasProperty | focal
Facets:
Source sentences:
text: A convex lens is also called a converging lens because it makes parallel light rays passing through it bend inward and meet (converge) at a spot just beyond the lens known as the focal point.
text: The point where the lens causes the light rays to converge is called the focal point.
text: It has a focal point about 11 centimetres (4.5 in) from the flat side and a focal length of about 12 cm.
text: Since light can pass through a lens in either direction, a lens has two focal points – one on each side.
text: For example, when a single negative lens is placed so that the image formed by the objective is located in the midpoint between the lens and its focal point, then the lens produces the image in its focal point and enlarging it two-fold, thereby acting as a 2× teleconverter.