Longitudinal wave: region of increased density: compression; region of reduced density: rarefaction; compressions are the darker areas on the wave; the compressions and rarefactions move with constant speed v; wavelength is distance from one rarefaction to the next or one compression to the next; the speed does not depend on the frequency!
These cootie catchers are a great way for students to have fun while learning about waves. These cootie catchers contain the following vocabulary terms: Wave, Amplitude, Vibration, Frequency, Trough, Wavelength, Crest, Pitch, Surface wave, Electromagnetic wave, Longitudinal wave, Refraction, Diffraction, Mechanical wave, Transverse wave, Medium, Sonic boom, Wave interference, Destructive interference, Constructive interference, Doppler effect, Compression, Rarefaction, Ear
Add direction, fetch and bottom profile/nature to get a surfing wave spec.
What a mechanical wave is and what it travels through, and different types of mechanical waves.
Reuben Margolin builds large scale kinetic sculptures based off of mechanical waves. Some of his sculptures contain hundreds of pulleys all working in harmony with each other to create sinusoidal waves and their resulting interference patterns. He designs them all on paper and does all of the complicated trigonometric calculations by hand. Everything is mechanical; there are no electronic controllers. While only video can do these sculptures any justice, the gallery below contains a few…