"First octave (unity of sound) is approximately the lowest frequency capable of producing waves of rarefaction and condensation in the air. The atomic aggregate oscillating at this pitch can be experimentally determined, and the aggregate vibrating at a pitch **one octave higher** will have a mass lying between 1/8 and the cube root of the mass of the first mentioned aggregate; the exact relation under varying conditions of gravity, magnetic saturation, and pressure, can be determined only by accurate measurements." [Scale of the Forces in Octaves]

See Also

**1st octave**
**3rd octave**
**4th octave**
**5th octave**
**6th octave**
**7th octave**
**8th octave**
**9th octave**
**C 1st Octave**
**D 2nd Octave**
**Figure 12.11 - Russells Locked Potential Full Ten Octave Gamut**
**Figure 9.17 - Russells Ten Octaves of Matter as Integrated Light - The Universal Constant**
**First Four Octaves - page 89**
**nine octaves of tones**
**Octave**