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In optics, a ray is an idealized geometrical model of light or other electromagnetic radiation, obtained by choosing a curve that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow. [1][2] Rays are used to model the propagation of light through an optical system, by dividing the real light ...
Mar 26, 2024 · Ray optics, also known as geometrical optics, is a branch of physics that studies the propagation of light by treating it as a collection of rays. These rays are essentially imaginary lines that represent the direction in which light travels. The form of energy that helps us see the objects around us is called light.
Optics, in a simple manner, is used to describe the behaviour of visible light, infrared light, and ultraviolet. Imaging is done with the help of a system called an image forming an optical system. Ray optics is also called geometrical optics. It is a branch of science that describes light propagation in terms of “rays”.
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- Ray optics also called geometrical optics, describes light propagation in terms of “rays”.
- Wave optics is the branch of optics that studies the diffraction, interference, polarization, and other phenomena for which the ray approximation o...
- Ibn al-Haitham is called the father of optics and describer of vision theory.
- Optics is the study of the wave properties of light, which can be grouped into 3 categories: Interference Diffraction Polarization
- According to the source of light, wavefronts can be of 3 types: Spherical wavefront Cylindrical wavefront Plane wavefront
- Important Terms Related to Mirror
- Reflection from The Plane Mirror
- Reflection from Curved Or Spherical Mirror
- The Image Formed by Spherical Mirror
Poles (vertex): The centre point of a mirror is called its poles.Principal axis: The straight line passing through the pole and the centre of curvature of the mirror is called the principal axis.Centre of curvature: The centre of the sphere of which the mirror is a part is called the centre of curvature and it is denoted by C.The radius of curvature: The radius of the sphere of which the mirror or lens is a part.A plane mirror is a mirror with a flat reflective surface, thus if a light ray strikes a plane mirror, the angle of reflection equals the angle of incidence.Therefore, the angle of reflection is the angle between the reflected ray and the normal.In Ray Optics, spherical mirror is simply a piece cut out of a reflective sphere. The first mirror was made by German Scientist Justus von Liebig, he coated the plane surface of a piece of ordinary...Such a mirror is called a silvered glass mirror.There are two types of spherical mirrors: concave and convex mirrors.The reflecting surface of spherical mirrors forms a part of the surface of a sphere. Reflecting the surface of such mirrors can be curved inwards or outwards.There are two types of spherical mirror 1. Concave mirror:Curved inward 2. Convex mirror:Curved outward And the image force by either of them can be explained as shown below
Geometrical optics. Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. The simplifying assumptions of geometrical optics include that light rays: may ...
The word “ray” comes from mathematics and here means a straight line that originates at some point. Figure 25.1.1 25.1. 1: Three methods for light to travel from a source to another location. (a) Light reaches the upper atmosphere of Earth traveling through empty space directly from the source. (b) Light can reach a person in one of two ways.
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The ray model of light is closely related to the concept of wavefronts. In ray optics, a wavefront is a surface that represents the points of a wave that are in phase, such as the peaks or troughs of a wave. The rays in the ray model of light are perpendicular to the wavefronts and indicate the direction of light propagation.
