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## Photos from The Physics Classroom's Flickr Group

### Lesson 0: Vibrations

Lesson 0 discusses concepts of vibration and periodic motion; emphasis is placed upon the motion of a pendulum and a mass on a spring. Items in the group's pool grandfather clocks, trampoline, pendula, springs, and much more. Photos complement many of the discussions from Lesson 0 of the Waves chapter of The Physics Classroom Tutorial.

### Lesson 1: The Nature of a Wave

Lesson 1 discusses the essential characteristics of waves and the categories of waves. Items in the group's pool include photos of water waves, slinkies, water disturbances, animations, etc. Photos complement many of the discussions from Lesson 1 of the Waves chapter of The Physics Classroom Tutorial.

### Lesson 2: Properties of a Wave

Lesson 2 discusses various wave properties such as frequency, period, wavelength, amplitude and speed. The conceptual and mathematical nature of each quantity is presented. Items in the group's pool include photos of various water waves, surface disturbances of water, slinky waves and much more. Photos complement many of the discussions from Lesson 2 of the Waves chapter of The Physics Classroom Tutorial.

### Lesson 3: Behavior of Waves

Lesson 3 discusses many wave behaviors such as the Doppler effect, wave interference, wave reflection, wave refraction and wave diffraction. Items in the group's pool include photos of ripple tanks, wave machines, diffraction phenomenon, interference phenomenon, and much more. Photos complement many of the discussions from Lesson 3 of the Waves chapter of The Physics Classroom Tutorial.

### Lesson 4: Standing Waves

Lesson 4 discusses the concepts and mathematics of standing waves and wave harmonics. Items in the group's pool include photos of standing waves formed in wave machines, springs, Kundt's tubes, light ropes, and much more. Photos complement many of the discussions from Lesson 4 of the Waves chapter of The Physics Classroom Tutorial.