Category Archive: Technology

Shadow Can Scare U !

When shadow forms, it maybe not the true size of ┬áits owner….. That’s also the basic principle of why films can be projected into a huger screen… Some shadows formed by this way… Continue reading

Fireworks – Chemistry’s Light

The earliest documentation of fireworks dates back to 7th century China, where they were invented. The fireworks were used to accompany many festivities. It is a part of the culture of China and… Continue reading