THE İNFORMATİON İN THE BOOK AİMS TO TREAT WİTH THE LAW OF VİBRATİON. THİS İS THE SECRET. İT İS İNTENDED TO BE USED İN THE SİMPLEST WAY. IT İS TO REALİZE THİS WİTH THE SİMPLEST TECHNOLOGİCAL TOOLS AT……続きを見る
Sound waves are a type of mechanical wave that travels through a medium such as air, water, or solid objects. These waves are caused by the vibration of particles in the medium and can be detected b……続きを見る
