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Transcript of Curved Mirrors
are larger than the object. The images of objects far from the mirror
are smaller and upside down. Concave spherical mirrors: bulges in and are used
whenever a magnified image of an object is needed. "curved mirrors" means that they are shaped like a sphere or globe The radius of the curvature, R, of the mirror determines where the image will appear and how large it will be. R= the distance from the mirror's surface to the center of curvature, C real image: an image formed when rays of light actually pass through a point on the image Image created by spherical mirrors suffer from spherical aberration. Spherical aberration: a defect of optical systems that arises when light striking a mirror or lens near its edge is focused at different points on the axis to the light striking near the centre Image location can be predicted with the mirror equation. Mirror Equation:
(1/p)+(1/q)=(1/f) 1/(object distance)+1/(image distance)= 1/(focal length) Unlike flat mirrors, curved mirrors form images that are not the same size as the object.
The measure of how large or small the images is w/ respect to the orignal object's size is called magnification. Equation for Magnification:
M= (h'/h)=(-q/p) magnification= image height/object height= - image distance/object distance For an image in front of the mirror, M is negative and the object is inverted. When the image is behind the mirror, M is positive and the image is upright. Convex spherical mirrors: mirror whose reflecting surface is an outward/bulging curve
, also known as diverging mirrors. Convex mirrors' resulting image is always virtual, and image distance is always negative. A cone-shaped concave mirror, that eliminates spherical aberration. Refracting telescopes: combo of lenses to form an image
reflecting telescopes: use of curved mirrors and other small lenses to form an image By: Chanler N. & Ashley G. Sources: