In the past the process of pursuing economic development, China in some areas at the expense of resources (mainly coal and oil) and the path of seeking development and the environment has come to an end, at present, China's carbon dioxide em...

LED lights are nowadays considered as most energy efficient lighting arrangement and somehow are better than popular CFL uses due to some definite advantages. However, as technology advances, due to intense research and study, and as result ...

There is no doubt that LED light bulbs can give you more compared to what a standard incandescent light bulbs can. In fact, an LED only uses a fraction of the energy incandescent bulbs consume to emit the equivalent amount of light. LEDs can...

A light-emitting diode (LED) is a semiconductor light source, which as the name suggests emits light. LED was first introduced in the year 1962. Initially it emitted low intensity red light. But with the advancement in technology modern ver...

Inquiries that began with the Geissler tube continued as even better vacuums were produced. The most famous was the evacuated tube used for scientific research by William Crookes. That tube was evacuated by the highly effective mercury vacuu...