Harmonic State Equation
Reference from the original Physics I textbook.
- Harmonic State Equation
L = length of a string fixed at both ends (m); n = harmonic number and number of half-wavelength segments (n = 1, 2, 3, …); λ = wavelength (m). There are n + 1 nodes including endpoints.

- Index
Reviewed physics notes (1)
These corrections keep the original lesson’s purpose while fixing errors in the source edition.
- n counts half-wavelength loops, not the number of nodes. — Reference 1