Point Perpendicular Light was created in 1899.
A normal ray in a diagram of reflection of light represents the perpendicular line drawn at the point of incidence on a mirror or reflecting surface. It is used to show the angle of incidence and angle of reflection in relation to the mirror's surface.
Piney Point Light was created in 1836.
Hawkins Point Light was created in 1868.
Sabin Point Light was created in 1872.
East Point Light was created in 1849.
Hospital Point Light was created in 1871.
Doubling Point Light was created in 1898.
Point Stephens Light was created in 1862.
Pemaquid Point Light was created in 1835.
Point Cartwright Light was created in 1978.
Wisconsin Point Light was created in 1913.
Smith Point Light was created in 1897.