Give an example of a simple harmonic oscillator, specifically noting how its frequency

Lecture 25 1 Recall: Focal lengths converging lens f diverging lens f 2 Recall: Images with Convex Lenses (2) § We start with a ray along the optical axis of the lens that passes straight through the lens that defines the bottom of the image. § A second ray is then drawn from the top of the object parallel to the optical axis • This ray is focused through the focal point on the other side of the lens § A third ray is drawn through the center of the lens that is not refracted in the thin lens approximation § A fourth ray is drawn from the top of the object through the focal point on the same side of the lens that is then directed parallel to the optical axis 10 Now, let’s study concave Lenses (1) § A concave lens is shaped such that parallel rays will be caused to diverge by refraction such that their extrapolation would intersect at a focal distance from the center of the lens on the same side of the lens as the rays are incident § Assume that a light ray parallel to the optical axis is incident on a concave glass lens § At the s