PPT-Interference of Waves

Section 91 Key Terms Interference Principle of Superposition Constructive Interference Destructive Interference Wave Interference Remember that waves are the result of particle vibrations Particles in a medium are connected by forces. Introduction to Physics II. . Class 4 – . Outline:. Ch. 21, sections . 21.5-21.8. Wave . Interference . Constructive . and Destructive Interference . Thin-Film . Optical . Coatings . . . Interference . April 8 – April 9. Interference. Can two different objects occupy the . exact. same location at the . exact . same time? . Of course not … but two waves can! . When waves meet, they . superimpose . Has wave properties.. Can diffract.. Can constructively or destructively interfere. .. Coherent Light. A beam of light that has the same frequency, wavelength, phase, and direction is called . coherent. When printing this presentation, first save as Adobe .. pdf. . Then print the . pdf. .. This will ensure the output page fits A4.. DNA Structure. How did we work out the structure of DNA?. It is not just crystals that we can investigate with diffraction…. Two pulses travelling in opposite directions will pass through each other unaffected. While passing, the displacement is simply the sum of the individual displacements. CP 514. SUPERPOSITION OF WAVES. and the. Doppler Effect. Lecture 9. Pre-reading. : . §16.6–16.7. Wave Interference. Two or more traveling waves passing through same space at same time (identical frequencies). Use principle of superposition. Dr. Mahender Singh. Associate Professor in Physics. Post Graduate Govt. College Sector-11. Chandigarh. Interference. The term interference refers to phenomenon involving superposition of waves leading to a modification of their intensity in the region of superposition.. Physics 2102. Gabriela Gonz. á. lez. Light is a wave. When two beams of light combine, we can have constructive or destructive “interference.” . http://www.colorado.edu/physics/2000/applets/fourier.html. . [3]. resonance . clocks – pendulum . springs . harmonic motion . mechanical waves . sound waves . The periodic wave relation. Wave interference. standing waves. beats. musical instruments. 1. Review. Acoustical Beat. Periodic change in sound intensity caused by interference between two nearly identical sound waves. They occur when the frequency of the 2 waves is nearly identical. You hear beats as a change in loudness, from soft to loud. REFLECTION. Reflection. is where a wave strikes an object and bounces off.. When a wave strikes a flat reflective surface it will reflect back at the same angle at which it struck the surface. This is called the Law of Reflection.. Dr. Quantum. 27.1 . The Principle of Linear Superposition. When two or more light waves pass through a given point, their electric. fields combine according to the principle of superposition.. The waves emitted by the sources start out in phase and arrive at . Physics . 2212. Light. Light has Wave properties. Light can Diffract. Light can Interfere. Constructively. Destructively. Wave Fronts. Lines that are perpendicular to the motion of the wave, indicate the location of the crests in the waves that are traveling together.. 1-d and 2-d waves. Wavefront. :. The actual 2-d wave . that we see moving. Ray:. The “vector”, drawn perpendicular to the . wavefront. , that shows the direction in which the wave is propagating (.