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Huygens Principle Applied to Reflection and Refraction PMS Physics
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#PMS #PMSPhysics • Huygens' principle states that every point on a wave front may be considered as a source of secondary waves. The word interference is used to describe the superposition of two waves, whereas diffraction is interference produced by several waves Huygens Principle of Secondary Wave lets: According to Huygens theory a point source S sends out waves in all directions. In time to, the waves of light would reach a distance Cx to equally in all directions in space. Where, 'c' is the velocity of light. All the points where the waves have reached in the same time are on the surface of a sphere with S as centre and radius equal to Ct0. The sphere is depicted by a circle in the plane of paper. Since all the points on the surface of this sphere have received the waves at the same time t therefore these are vibrating in the same phase. So, this surface is called q wave front. A line drawn perpendicular to the wave front is called a ray of light. So, all the radii of there spherical wave front represent rays as shown in figure.In order to explain how a wave front is propagated forwards through a homogeneous isotropic medium.Christian Huygens made the following two assumptions: 1.Each point on a wave front acts as a fresh source of disturbance called as secondary wavelets. These wavelets spread out in the medium with the velocity of light in that medium. 2.The new wave front at any later time is obtained by taking the forward envelope of the secondary wavelets at that time.Let S be a point source of light which sends out spherical disturbances in the homogeneous and isotropic medium around it. Let AB be a trace of a spherical wave front at any instant t0. Each point on this spherical wave front is a source of secondary wavelets. Starting from different points of wave front at any instant t0. Each point of this spherical wave front is a source of secondary wavelets. Starting from different points of the wave front, the secondary wavelets will travel a distance CΔt in time Δt. So, each secondary wavelet will be a sphere of radius CΔt. • ============================================================ • 1. Power of Lens • • Power of Lens | Explanations | PMS Ph... • 2. Unknown space nasa • • Unknown space NASA | PMS • 3.Ohm's Law • • Ohm's Law | Explained | PMS Physics • 4. மன அழுத்தமில்லாத வாழ்க்கை வாழ வேண்டுமா ? 8 Tipes • • மன அழுத்தமில்லாத வாழ்க்கை வாழ வேண்டும... • 5. Hydrogen Spectrum Intro • • Hydrogen Spectrum Intro | PMS Physics • 6. Lyman Series • • Lyman Series | PMS • 7. Washing Soda | how to make washing soda • • Washing Soda | Explanation | PMS • 8. Multiple Reflections images • • Multiple Reflections images | PMS p... • 9. Mirage I Total internal reflection in nature ( Mirage ) • • Mirage I Total internal reflection in... • 10. Visible Light Spectrum | how to see clearly past the visible light spectrum • • Visible Light Spectrum | how to see c... • 11. Excitement of physics | Delirium of Physics |The Real World | Facts of physics thrill • • Excitement of physics | Delirium of P... • 12. Concave Lenz • • Concave Lens|Explanations|PMS Physics • 13. Refraction • • Refraction | Refraction of light | re... • 14. Infrared waves | what is infrared waves | how do infrared waves work • • Infrared waves | what is infrared wav... • 15. Gauss Law • • Gauss Law explains | Analyze the Gaus... • ============================================================= • #PMS • ****************************************************** • for more to discuss pl join our telegram group • https://t.me/pmsphysics • Free Guides Every Time : https://pmsphysics.blogspot.com • Blogger : https://pmsphysics.blogspot.com/2021/... • Instagram: https://www.instagram.com/invites/con... • Facebook: / pathamuthus • Share chat : https://b.sharechat.com/9C65mJUF57 • **************************************************** • Likes I Comment I Share I subscribe Now • Subscribe Links: / @pmsphysics • ***************************************************** • Contacts Me • R.Pathamuthusamy M.Sc.,B.Ed.,M.Sc(Psyc).,P.B.Ed • online Physics Tutor • +91-9742481184 • Email id : [email protected] • ****************************************************
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