Physics 4-17-12 Harmonics & Beats

PHYSICS: So why do instruments that are playing the same note sound so different? Here’s the lecture from Monday on harmonics & beats.

Have you ever seen sound? Here’s an applet you might be interested in checking out: The vOICe Java Applet. Click on the name, or it’s at You might have to update Java – I did.

Chemistry 4-17-12 Balancing Chemical Equations – Pt. 2

CHEMISTRY: Need some help balancing equations? Here’s day two of “How to write a balanced chemical equation.” And don’t forget – first, check and make sure you have the formulas written correctly. Then, if you can’t get the equation balanced, go back and check the formulas!! You can do this! 🙂