Encyclopedia
Ultrasound
Ultrasound - elastic vibrations and waves with frequencies above the human audible range
Source: "МСанПиН 001-96. Sanitary norms of permissible levels of physical factors when using consumer goods in household conditions. Interstate sanitary rules and norms." (approved by Decree No. 2 of the Russian State Sanitary and Epidemiological Surveillance Committee dated January 19, 1996, by Decree No. 9-29-95 of the Ministry of Health of the Republic of Belarus dated June 8, 1995) (with amendments from December 21, 1999)