Lenses Physics
A converging lens is a lens that converges rays of light that are traveling parallel to its principal axis: thick across their middle and thin at their upper and lower edges- double convex lens
symmetrical across both its horizontal and vertical axis
A diverging lens is a lens that diverges rays of light that are traveling parallel to its principal axis:thin across their middle and thick at their upper and lower edges- double concave lens
symmetrical across both its horizontal and vertical axis
Converging lenses: incident ray traveling parallel to principal axis will refract through sense and pass through focal point on opposite side of lens. incident ray passes thrugh the center of lens will continue in same direction after passing through lens
Diverging lens: on object's side of the lens, continue the same direction.
the index of refraction values are dependent upon the frequency of light
The absorption and re-emission process causes the higher frequency (lower wavelength) violet light to travel slower through crown glass than the lower frequency (higher wavelength) red light.
