Marble bridge problem

Here students can be seen trying to solve a problem which requires transporting a marble from one tower to another.

Marbles passing from tower to tower

This session introduced the notion of harmonics, frequency, oscillation, triangulation and, of course, solving problems. We talked about the Tacoma Narrows bridge failure , particular thanks to Mr. Hamshaw and we looked at a glass being broken with sound.
Homework - go home and try singing to a wine glass ... loudly and highly pitched... or simply run your finger lightly around a slightly dampened rim of a wine glass.. you s
hould hear the harmonic evidence of ocillating frequency. See video here, http://www.youtube.com/watch?v=ECNDpCYvaOc

Next meeting not until 5th May - happy Easter form Mr. Geekie and the team.

see video here
http://www.physics.ucla.edu/demoweb/demomanual/acoustics/effects_of_sound/breaking_glass_with_sound.html