Intensity, Energy, Decibels

Pre-lecture Videos: Watch these videos before doing the pre-lecture assignment. (**denotes supplementary but suggested)

Waves - light, speed (5min) **

wave pulse down string masses and pulley example (9min) **

Waves - boundaries (4min)

Waves - intensity (8min)

Waves - intensity energy example (3min) **

Waves - Decibel Scale (9min)

Waves - Log scale review (4min) **

Waves - Change in Decibels (7min) **

Waves - Change in Decibels_changing power (4min) **

Waves - Decibel example stereo watts (3min) **

Waves - Decibel example sirens (7min) **

Waves - Decibel example remove machines (3min) **