Physics:Newton's Apple（29）
On this episode of Newton's Apple， we shall find answers to the questions: First， how do miners find and retrieve gold from underground mines? We've sent out Suchin Pak to search for the answer. Second， Camille Richard from Utah wants to know how we get the phases of the moon. And last， Kraig T. Nelson set us straight on the science of curves.
- Added：2006
- Country：America
- Duration：30
- Time of update：2011/8/16 10:35:46