Wave Types
Comparing longitudinal and transverse disturbances
Sources of Sounds: What is the source of all sounds?
Video Instruction
showmethephysics.com
A Guitar String Through a Camera
The rolling-shutter effect makes the string appear to bend in unusual ways; it does not show the string’s actual shape at one instant.
Filming tips from the author: brightly backlight the strings, use a pencil as a support, and compare the front- and rear-facing cameras.
C. Vibrations & Waves
Transverse and Longitudinal Waves
Sound and a vibrating guitar string
Check Your Understanding
Which guitar is vibrating with the highest frequency?
The guitar on the right.
Check Your Understanding
5 quick questions — pick an answer to see if you’re right.
1. In a longitudinal wave, the particles of the medium vibrate
2. Which of these is an example of a longitudinal wave?
3. What is the source of all sounds?
4. A longitudinal wave is made of alternating regions called
5. When you hear a friend talk across the room, what happens to the air molecules near their mouth?
