Physics:Newton's Apple（25）
On this episode of Newton's Apple， we shall find answers to the questions: First， I see signs on the pumps at the gas station. It says the gasoline contains ethanol. What is ethanol? And what does it do to the gasoline in my engine? Second， how do bones get so strong? And last， welcome to this week's Science Try-its.
- Added：2006
- Country：America
- Duration：30
- Time of update：2011/8/16 10:29:47