CHEM 1R03 Lecture Notes - Lecture 6: Standing Wave

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1R03
• Professor: Doug Mc Callion

Document Summary

Resonance is the response of an object that is free to vibrate to a periodic force with the same frequency as the natural frequency of the object. Some examples include a child on s swing, pushing a car out of a ditch, wine glasses and organ pipes. We will examine this concept more in a few lessons. In order to accomplish this, we need to send multiple pulses down a string and allow the reflected pulses to interfere with the incident ones. We often display a standing wave by drawing the crests. Quantitatively, lets look at the wavelength of a standing wave. If we count 4 crests on a standing wave, there are only 2 wavelengths. Remember that one wavelength consists of one complete cycle, in this case it has one crest and one trough. How many wavelengths are on the whip? (1. 75)