| [ sciEncE ] in KIDS 글 쓴 이(By): parsec ( 먼 소 류 ) 날 짜 (Date): 2000년 9월 4일 월요일 오후 09시 18분 11초 제 목(Title): Re: Wise answer on electricity > why muscle vibrate with twice the frequence of the home power? ^^ The electrical potential changes directions in a period and your muscle responds to both. But the vibrational component is in fact small. The contraction will build up to the limit at pulse rate over ~20 pps(pulse per second), until you lose control of your muscle, including your heart muscle. At a lower rate (~5) the contraction and relaxation will repeat and give you feeling of repeated blows. |