Amazing Resonance Frequency Experiment!

Sound frequencies refer to the number of vibrations or cycles a sound wave completes per second, measured in Hertz (Hz). They determine the pitch of the sound:

Infrasound: Below 20 Hz (not audible to humans).
Audible sound: 20 Hz to 20 kHz (the range humans can hear).
Ultrasound: Above 20 kHz (not audible to humans but used in medical imaging).
Different frequencies correspond to different sounds, with lower frequencies producing bass sounds and higher frequencies producing treble sounds.