The “Helmholtz resonator” concept explains the frequencies of sound produced by clapping the hands together in different configurations.

measuring the different frequencies when the size and shape of the cavity between hands changes: when clapping with cupped hands, flat hands or fingers to palm. They found the larger the cavity ...

Ilan Danan, MD, MSc, sports neurologist and pain management specialist at the Center for Sports Neurology and Pain Medicine at Cedars-Sinai Kerlan-Jobe Institute in Los Angeles, CA Cupping therapy ...