PHYS 1750: SELECTED TOPICS in PHYSICS
LECTURE 26 and 27. Wave Motion
| 15.9. | The Wave Equation | ||
| 1. | Speed v | ||
| 2. | Wavelength λ | ||
| 3. | Frequency f | ||
| 4. | Phase: position along wave, between 0 and 2π | ||
| 5. | v = f λ | ||
| Waves on a String | |||
| v = sqrt (T / μ) | |||
| T = tension, μ = mass / length | |||
| 15.10. | Superposition | ||
| 1. | One wave on another; neither "knows" of the other's existence | ||
| 2. | Interference | ||
| a. | Constructive | ||
| b. | Destructive | ||
| 3. | Reflection | ||
| a. | Hard reflection | ||
| b. | Soft reflection | ||
| 4. | Standing Waves | ||
| a. | Nodes | ||
| b. | Fundamental and harmonics | ||
| c. | fn = ( n / 2L ) v | ||
| d. | n: harmonic number | ||
| 5. | Beats: fb= f1-f2 | ||
