Meinl Tuning Fork Sidereal TF-E-SI

Planet Tuning Fork

• Note: G3
• Determination of frequency: Duration of an exact rotation of the earth around its own axis, measured from a fixed star position (~ 23h 56 min.), Position from the sun: 3rd planet
• Orbital period in days: 1
• Round trip time in seconds: 86164.09054
• Frequency calculation: 1 / 86164.09054 sec = 0.0000116 Hz, (0.0000116 Hz x 2) 2^23 = 194.71 Hz
• Frequency: 194.71 Hz (24th octave)
• Shifted standard tuning 440 Hz: A4 / a' = 437.11 Hz
• Made in Germany