Module1 Class4 Spherical Boundaries and Lenses

Learning objectives in this class:
Define a spherical boundary and a spherical lens
Illustrate the image of an object through a spherical boundary
Estimate the focal length of a lens based on its refractive index, its radii, and the refractive index of the surrounding medium.
Illustrate the image of an object through a spherical lens
Differentiate the optical tracing between converging and diverging lenses