Understanding Mirrors: Types, Equations, and Applications, High school final essays of English

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Introduction – Trishia Let’s start with “What is a mirror? In physics mirrors, Light can be reflected and reconvened to form images. The mirror has 6 parts which are;

• Principal Axis, which is if a concave mirror were a slice of a sphere, a line would run through the center of the sphere and attach to the mirror in the precise center.

Spherical Mirrors are curved mirrors with a spherical shape in particular. There are two types of spherical mirrors, which are Concave and Convex mirrors.

**- Concave Mirrors are mirrors that feature a curved surface with a center of curvature that is equidistant from all points on the surface.

• Convex Mirrors are the reflective surface of a mirror bulges toward the light source.**

Example – Marc & Dylan(2 :30-3 mins) Here are some examples of the mirrors used in life. Concave

• concave mirrors are used in solar furnaces: Solar furnaces consist of concave mirrors to focus sunlight at a particular point. The concave mirror collects a large amount of light and focuses it on the focal point. Heating, cooking, generating electricity, and melting metals all uses concentrated energy.

Convex

- Large offices, stores, and hospitals use a convex mirror to let people see around the corner so that they can avoid running into each other and prevent any collision. - Convex mirrors are widely used as rear- view mirrors in automobiles and vehicles because it can diverge light beams and make virtual images.

Mirror Equation The mirror equation expresses the quantitative relationship between the object distance (d o ), the image distance (d i ), and the focal length (f). The equation is stated as follows:

Importance – Barbie & Hannaj ( 2 :30-3 mins) A mirror is a reflective surface that does not allow the passage of light and instead bounces it off, thus producing an image. The most common mirrors are flat and called plane mirrors. These mirrors are made by putting a thin layer of silver nitrate or aluminum behind a flat piece of glass. A microscope uses a mirror to reflect light to the specimen under the microscope.

An astronomical reflecting telescope uses a large parabolic mirror to gather dim light from distant stars. A plane mirror is used to reflect the image to the eyepiece. Parabolic mirrors are used in torches and car headlamps as reflectors. Ray diagrams can be used to determine the image location, size, orientation and type of image formed of objects when placed at a given location in front of a concave mirror. Ray diagrams provide useful information about object-image relationships, yet fail to provide the information in a quantitative form.

Mirrors of different design and construction vary widely in their reflectivity, from nearly 100 percent for highly-polished mirrors coated with metals that reflect visible and infrared wavelengths, to nearly zero for strongly absorbing materials. The images formed by a mirror are either real or virtual, depending upon the proximity of the object to the mirror, and can be accurately predicted with respect to size and location from calculations based on the geometry of any particular mirror.