Theoretical Optics
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This document discusses reflection and mirrors. It defines reflection as light, heat, or sound bouncing off a surface. There are two main types of reflection: specular from smooth surfaces and diffuse from rough surfaces. Mirrors are surfaces that form images using reflected light rays. Plane mirrors form upright, same-sized virtual images. Curved mirrors can be concave or convex. Reflection depends on the angle of incidence being equal to the angle of reflection measured from the normal line perpendicular to the surface.
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Prism
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2. The angle of deviation (D) of a prism is determined by its refractive index (n) and refractive angle (α) using the formula D = (n-1)α.
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Tangent Screen introduction.
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Keratometry
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light-class7-220112081726.pdf
Light travels in a straight line. Objects can be transparent, translucent, or opaque depending on how much light they allow to pass through. Reflection is when light bounces off a surface like a mirror. The angle of incidence equals the angle of reflection. Images formed by plane mirrors are virtual, erect, and laterally inverted. Spherical mirrors can be concave or convex. Concave mirrors form magnified or diminished real/virtual images depending on the position of the object. Convex mirrors always form diminished virtual images. Lenses can be converging or diverging, and form different types of real or virtual images based on the position of the object. White light is made up of the visible light spectrum, which can
Light
This document discusses key properties of light, including that it travels in straight lines at 3x10^8 m/s in a vacuum. It describes rays and beams of light and the reflection and refraction of light, including the laws of reflection. Reflection is when light bounces off surfaces, and refraction is when it bends when moving between materials of different densities. Refractive index measures the bending of light, and refraction makes objects appear at a different depth than their real depth under water.
The nature and propagation of light
This document discusses key concepts in optics including:
- Reflection and refraction of light based on the laws of reflection and refraction. The law of reflection states that the angle of incidence equals the angle of reflection, while refraction depends on the index of refraction between two materials.
- Total internal reflection, which occurs when light traveling from an optically dense medium to a less dense one is completely reflected back if the angle of incidence is greater than the critical angle.
- Image formation by plane mirrors, which produce virtual images that are laterally inverted, the same size as the object, and an equal distance behind the mirror as the object is in front of it.
Reflections
Light that bounces off an object's surface is known as reflection. There are two types of reflection: regular reflection where parallel light rays remain parallel after striking a smooth surface, and diffuse reflection where parallel rays strike a rough surface and reflect in different directions. The laws of reflection state that the incident ray, reflected ray, and normal line all lie in the same plane, and the angle of incidence is equal to the angle of reflection.
Reflection
This PPT talks about "Reflection of light". All information is taken from the Textbook Syllabus of grade 6. All images are from Google Images.
Class 10 sa 2... 2017-2018
This document provides an overview of light and optics concepts for a 10th grade science class. It defines key terms like luminous and non-luminous objects, the wave and particle nature of light, reflection, refraction, and different types of mirrors. Plane mirrors are described as forming virtual, erect images of the same size as the object. Spherical mirrors can be concave or convex, with concave mirrors bringing parallel rays to a focus and convex mirrors diverging them. The properties and uses of different mirror types are summarized.
Reflections
Light that bounces off a surface is known as reflection. There are two types of reflection: regular reflection where parallel light rays remain parallel after striking a smooth surface, and diffuse reflection where parallel rays strike a rough surface and reflect in different directions. The angle of incidence, which is the angle between the incident ray and normal line, is always equal to the angle of reflection, which is the angle between the reflected ray and normal line.
Light (Reflection & Refraction) - PERU.pptx
The document discusses properties of light including reflection, refraction, and Snell's Law of Refraction. Reflection is the bouncing back of light off surfaces, either specularly from smooth surfaces or diffusely from rough surfaces. Refraction is the bending of light caused by changes in medium, with light bending toward the normal when moving to a denser medium. Snell's Law describes the relationship between incident and refracted angles of light.
PPT
This document discusses the properties and laws of light reflection. It defines key terms like the incident ray, reflected ray, normal, angle of incidence, and angle of reflection. The document explains that the angle of incidence equals the angle of reflection, known as the Law of Reflection. It also describes the phenomena of lateral inversion in mirror reflections and the differences between regular and irregular reflection.
reflection of light in spherical spheres.pptx
Spherical mirrors are mirrors with curved reflective surfaces, either concave (curved inward) or convex (curved outward). Concave mirrors form images that are virtual, upright, and left-right reversed, located behind the mirror at a distance equal to the object's distance from the mirror. Ray diagrams can be used to understand the position and features of images formed by spherical mirrors, using two key rays - one incident ray and one reflected ray.
Geometric optics
Most of the times this study confused me...so, i just put some important points in one place to easily keep them in mind..hope it will help other students as well..and inform me, if a reader find anything new to improve it further.
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Theoretical Optics
- 1. REFLECTION SALIGAO, MARIA FRANCHESCA E. OD3A
- 2. •occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface •The return of light, heat, sound, etc. after striking a surface. •Bouncing back of light.
- 3. TYPES OF REFLECTION • Specular/Regular Reflection • Light reflected from a smooth surface at a definite angle. • Diffuse Reflection • Produced by rough surfaces that tend to reflect light in all directions.
- 5. MIRRORS
- 6. •A reflecting surface that forms an image of an object when light rays coming from that object fall upon it. •a reflective surface, now typically of glass coated with a metal amalgam, that reflects a clear image.
- 7. TYPES OF MIRRORS •PLANE MIRROR • mirror with a flat (planar) reflective surface. • A plane mirror makes an image of objects in front of it; these images appear to be behind the plane in which the mirror lies. A straight line drawn from part of an object to the corresponding part of its image makes a right angle with, and is bisected by, the surface of the plane mirror.
- 8. • The image formed by a plane mirror is always virtual (meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting.
- 10. CURVED MIRRORS
- 11. •spherical mirror •a mirror with a curved reflecting surface •2 types: concave convex
- 16. INTERFACE
- 17. •Interface is a surface separating 2 phases of matter, each of which may be solid, liquid or gas. •It is not a geometric surface, rather a thin layer with differing properties on either side of it.
- 21. •Normal to the surface or normal vector is a vector which is perpendicular to the surface at a give point
- 25. • A ray of light that is pointing towards and striking at the surface. INCIDENT RAY
- 26. •The ray thrown back from the surface after being hit by the incident ray. REFLECTED RAY
- 27. ANGLE OF INCIDENC AND ANGLE OF REFLECTION
- 28. • Angle of incidence - the angle between the incident ray and the normal of the surface. • Angle of Reflection -the angle measured from the reflected ray and the normal of the surface. • The angle of incidence is equal to the angle of reflection
- 30. GLANCING ANGLE AND POINT OF INCIDENCE
- 31. GLANCING ANGLE • Also called "Grazing angle" • Angle between incident ray and the surface upon which it is incident. • Complement of angle of incidence.
- 32. POINT OF INCIDENCE •the point where the ray of incidence strikes the mirror.
- 33. END