Go to: Course homepage, Lectures

Informal session:

o Tu 3:30-4:20pm, RAS 218; (Next Tuesday last meeting)

Lecture 36(iq32)

General expression of traveling waves

Standing waves:

· Normal modes: n-harmonics along a string

· Normal modes in various organ pipes

Phenomena in sound waves: (demo)

· Beats

· Resonance

Power of transmission

Intensity of sound

· In decibels

· Intensity as a function of r due to a point sound source

Reminders:

· Most of the lecture material for HW13 will be covered by the end of today’s lecture. We plan to cover HW14 lecture material on Friday and next Monday.

· Plan to complete hw13 asap, and complete most of hw14 the Wednesday before Thanksgiving.

· There will be no more Friday’s informal sessions for the remainder of the semester.