Brit milah. The brit milah (Hebrew: ×Ö°Ö¼×¨Ö´××ª ×Ö´××Ö¸×â, pronounced; Ashkenazi pronunciation:, covenant of circumcision; Yiddish pronunciation: bris ) is a Jewish religious male circumcision ceremony performed by a mohel (circumciser) on the eighth day of a male infant's life.
An example of a 1930 Soundex Card. Photo courtesy of the National Archives. The Soundex is a coded surname index (using the first letter of the last name and three digits) based on the way a name sounds rather than the way it's spelled. Surnames that sound the same but are spelled differently - such as Smith and Smyth - have the same code and are filed together.
In physics, sound is a vibration that propagates as a typically audible mechanical wave of pressure and displacement, through a transmission medium such as air or water. In physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can hear sound waves with frequencies between about 20 Hz and 20 kHz. Sound above 20 kHz is ultrasound and below 20 Hz is infrasound.