PPT-Calculating Period, Frequency, Wavelength and Velocity of Waves

Measuring Waves Variables Recap Frequency f of waves passing a point in 1 second SI unit Hertz Hz shorter wavelength higher frequency higher energy 1 second Range for human hearing . S8P4. Students will explore the wave nature of sound and electromagnetic radiation. . a. Identify the characteristics of electromagnetic and mechanical waves. . What are waves?. Waves carry energy. Rhythmic disturbances that carry energy without carrying matter are called waves.. :. Finish Chap 15. Start Chap . 19 (Vibrations and Waves). . Vibrations. Some Preliminaries . Vibration = oscillation = anything that has a back-and-forth to it . Eg. . Draw a pen back and forth over the same line, repeatedly:. What is a wave?. A wave is a repeating disturbance or movement that transfers energy through matter or space. Waves transfer energy not matter. The water waves below are carrying energy but are not moving. Waves can only exist as they have energy to carry.. ATM 562 - Fall, 2015. Introduction. Gravity waves describe how environment responds to disturbances, such as by oscillating parcels. Goal: derive “dispersion relation” that relates frequency (period) of response to wavelength and stability. Periodic Motion – any repeated motion with regular time intervals. Simple Harmonic Motion – vibration about an equilibrium position in which a restoring force is proportional to the displacement from equilibrium . Vocabulary. Period: the time for one cycle of simple harmonic motion, or the time for a full wavelength to pass a position.. Frequency: the number of cycles, or the number of wavelengths passing a position, in one second. . Waves. Water and Seismic Waves. Transverse Waves. Longitudinal Waves. Frequency, Period and Amplitude. Crests, Troughs and Wavelength. Universal Wave Equation. Waves. Waves are disturbances which transfer energy over a distance. Sound is a . longitudinal. . (Mechanical)wave caused by a . vibrating. object. Molecules . collide. , producing sound. Examples: . Vocal chords. , guitar or piano strings, tuning fork, etc.. . Longitudinal Wave. amplitudes in shallow watersFigure 4Exploring Florida Teaching Resources for Science1/7 In reality waves are rarely steeper than 1/12 Waves will break when H/h is approximately 08 regardless of the st Looking back, it may seem odd that two decades passed between the 1905. discovery of the particle properties of waves and the 1924 speculation that particles might show wave behavior. It is one thing, however, to suggest a revolutionary concept to explain otherwise mysterious data and quite another to suggest an equally revolutionary concept without a strong experimental mandate. The latter is just what Louis de Broglie did in 1924 when he proposed that moving objects have wave as well as particle characteristics. So different was the scientific climate at the time from that around the turn of the century that de Broglie’s ideas soon received respectful attention, whereas the earlier quantum theory of light of Planck and Einstein had been largely ignored despite its striking empirical support. The existence of de Broglie waves was experimentally demonstrated by 1927, and the duality principle they represent provided the starting point for Schrödinger’s successful development of quantum mechanics in the previous year. Essential Knowledge.  . 3.B.3:. . Restoring forces can result in oscillatory motion. When linear restoring force is entered on an object displacement from an equilibrium position, the object will undergo a special type of motion called simple harmonic motion (SMH). . A pulse is a single travelling disturbance.. A wave is periodic disturbances. Revised 1.27.2022 Some diagrams from Pearson Physics by Walker. Used with permission. Let’s take a look at waves in a ripple tank.. ). Looking ahead: Midterm 2 Nov 18. (on . Chs. 9, 11, 13, 14, 15, 19, 20, 22 probably). . Vibrations. Some Preliminaries . Vibration = oscillation = anything that has a back-and-forth to it . Eg. . Draw a pen back and forth over the same line, repeatedly:. Chapter 1 section 2. Electromagnetic Spectrum. In . 1852. , James Clerk Maxwell proved that . visible. light was part. of a larger spectrum.. Each. color of . visible. light is a different . wavelength of electromagnetic radiation..