Thomann Planetary Tuning Fork Mercury

Thomann Planetary Tuning Fork Mercury, Tuning Fork Mercury, 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, Position of the sun: 1st planet, Orbital period in years: 0.24, Orbital period in days: 87,969, Orbital period in seconds: 7600522, Frequency calculation: 1/7600522 sec. = 0.0000001316 Hz, (0.0000001316 Hz x 2) 2 to the power of 29 = 141.27 Hz, Frequency 141,27 Hz (= 30 octave), Note: C#3, Shifted standard tuning 440 Hz: A4/A‘ = 448.50 Hz ...