A Firecracker (also known as a Cracker, Noise Maker, Banger or Bunger) is a small explosive device primarily designed to produce a large amount of noise, especially in the form of a loud bang; any visual effect is incidental to this goal. They have fuses, and are wrapped in a heavy paper casing to contain […]
Category Archives: Chemistry
Four Great Inventions
The Four Great Inventions are the inventions that are celebrated in Chinese culture for their historical significance and serve as symbols of China’s advanced science and technology. The Four Great Inventions are: Compass Gunpowder Paper Making Printing