PPT-Standing waves and Normal modes

Lecture 7 Prereading 161 Standing Waves Formed through reflection superposition of waves moving in opposite directions Contains nodes no displacement and antinodes maximum displacement . Section 9.2. Key Terms. Media Boundary. Free-end Reflection. Fixed-end Reflection. Transmission. Standing Wave. Node. Antinode. Fundamental Frequency/First Harmonic. Harmonics. Overtone. Media Boundaries. Martin . Endreß. / Benjamin . Rampp. University . of . Trier. International Conference. “Security, Ethics, and Justice: Towards a More Inclusive Security Design”. June 21-23, 2012, . Tübingen. Teddie Keller. . Rich Rotunno, Matthias Steiner, Bob Sharman. Orographic Precipitation and Climate Change Workshop. NCAR, Boulder, CO 14 Mar 2012 . *Miglietta, M. M., R. Rotunno, 2005: Simulations of Moist Nearly Neutral Flow over a Ridge. J. Atmos. Sci., 62, 1410-1427. Group velocity: the speed of information. Group-velocity dispersion. Superposition again. Standing waves: the . sum of two oppositely. traveling waves. Beats: the sum of two different frequencies. 1. A) zero everywhere. B) positive everywhere.. C) negative everywhere. D) depends on the position.. Clicker Question. Room Frequency BA. No dependence on amplitude. String pieces are all at turning points! . Interference of Waves – Standing Waves. Tsunamis. Waves: Frequency, Wavelength, Velocity. Wave Motion. A vibrating point “drags” its . neighbours. into motion. As the motion spreads through space – a wave forms. Sound. © 2016 Pearson Education, Inc.. Goals for Chapter 12. To describe mechanical waves.. To study superposition, standing waves and sound.. To present sound as a standing longitudinal wave.. To see that waves will interfere (add constructively and destructively).. 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 (. for . two identical waves traveling in opposite directions.. .  Snapshots . of the blue and the green waves and their red sum shows a wave that appears to not be traveling..  Because . the resultant red wave is not traveling it is called a . Science Journal Entry 34. Compare and contrast transverse waves, longitudinal waves, and surface waves.. Review. There are three types of waves: transverse, longitudinal, and surface waves.. A transverse wave causes the medium to vibrate at right angles to the direction of the wave. Longitudinal waves (also called compressional waves) cause the medium to move parallel to the direction of the wave.. Periodic Motion. Motion that repeats in a regular cycle is called . periodic motion. . . The revolution of a planet about its sun is an example of periodic motion. The highly reproducible period (T) of a planet is also called its year.. Energy is moving, not water. orbital motion. energy is transferred via circular motions. water (and gull) return to original position. the wave form moves forward. Motion decreases with depth. At. a depth of ½ of the wavelength, the motion is not significant.. ?. Why does your debit card have a black strip on . the back?. SLC today. E&M Quiz. 10 questions. 3 MC, 6 written, 1 drawing. Scientists. Electromagnetic Induction, Electromotive force. Magnetic field lines. 18-1 Mechanical waves. In this chapter, we consider only . mechanical waves. , such as . sound waves. , . water waves. , and . the waves transmitting in a guitar’s strings.. . . Elastic mediums.