Tag: Refraction
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Astigmatism
Introduction Astigmatism is a common vision condition that causes blurred or distorted vision as a result of an irregular curvature of the cornea or the lens of the eye. In an astigmatic eye, the light rays are not converged to a single focus point to provide clear vision. Instead, they are focused on multiple points,…
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Chapter 1: Geometric Optics
1.1 Introduction Geometric optics is a field of physics that deals with the study of light and its interaction with various media using the principles of geometry. It is based on the assumption that light travels in straight lines called rays, and it simplifies the analysis of complex optical systems by neglecting the wave properties…
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Chapter 26: Electromagnetic Waves
26.1 Introduction In this chapter, we will explore electromagnetic waves, a type of wave that propagates through space as a combination of oscillating electric and magnetic fields. Electromagnetic waves are crucial in numerous applications, including communication, imaging, and remote sensing. 26.2 Properties of Electromagnetic Waves Electromagnetic waves are characterized by their frequency, wavelength, and speed.…
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Optics
Introduction Optics is a branch of physics that studies the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light. Nature of Light Light is an electromagnetic wave, and its speed in a vacuum…
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Refraction
Introduction Refraction is the change in direction of a wave passing from one medium to another caused by its change in speed. This fundamental concept in physics is most commonly observed when a wave, such as light or sound, passes from air into water or from air into glass. The Principle of Refraction When light…
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Snell’s Law
Introduction Snell’s Law, also known as the law of refraction, describes the relationship between the angles of incidence and refraction when a wave passes from one medium to another. It is a fundamental concept in the study of optics and wave propagation. Statement of Snell’s Law The law states that the ratio of the sine…