Thomann Planetary Tuning Fork Earth

Thomann Planetary Tuning Fork Earth, Tuning Fork Earth, Gold-plated - suitable for allergy sufferers, Extra-long handle for better feel and control, Made in Germany@+*Description:*, Duration of one orbit around the sun (= calendar year) OM tone, Position of the sun: 3rd planet, Orbital period in years: 1, Orbital period in days: 365, Orbital period in seconds: 31556925.9747, Frequency calculation: 1/31556925.9747 sec = 3.1689x10 to the power of -8 Hz (3.1689x10 to the power of -8 Hz x 2) 2 to the power of 31 = 136.10 Hz, Frequency 136.10 Hz (= 32 octave), Note: C#3, Shifted standard tuning 440 Hz: A4/a‘ = 432.09 Hz