- Home
- China
- World
- Europe
- Politics
- Business
- Opinions
- Tech & Sci
- Culture
- Sports
- Travel
- Nature
- Picture
- Video
- Live
- TV
- Specials
Video
14:03, 21-Oct-2019
Cheers Science: Frozen sand, iron or cotton, which one is the toughest?
Share
Copied
03:09
Sand, iron plates and cotton balls are frozen into icy blocks. Which one of the three can best withstand a hammer strike? A CCTV program "Cheers Science" adopted an experiment to find out.