Category Archives for Light and Waves
This YouTube playlist includes all of the questions. This should allow easier navigation as you stay on this one page.
Each note is played using a length of pipe cut to the length for that wavelength of standing wave to be produced. The conductor is waving a tube at the people who take their turn to play at this time.
A useful doppler effect interactive applet to show waves bunching and stretching: http://lectureonline.cl.msu.edu/~mmp/applist/doppler/d.htm