A light emitting device commonly known as LED lights basically employ the technique of converting electrical energy into light energy. Its structure consists of a semiconductor with a p-n junction which emits light of high energy and efficiency when activated.
They first came into existence in 1960 and was invented by a person named Nick Holonvak Jr, a young scientist.
A p-n junction has the ability to convert the absorbed light into electric current. But in LED this process is reversed, here the p-n junction emits light when electrical energy is applied to it.
Following are some important and interesting facts about LED lights which you must know:
- In many bakeries and stores, you must have noticed LED lights near the food section. This is done to keep the food fresh. It is an experimentally proven fact that LED lights have the ability to kill and reduce the breeding of harmful bacteria as compared to that of the bulb and other fluorescent lights.
- LED lights in Canada do not contain mercury. This is the major reason as to why about 90-95% parts of this light are recyclable. On the other hand, fluorescent and incandescent lights parts cannot be reused and they all contain mercury in different amounts as well.
- Various studies were conducted by NASA over past many years, it was found that LED lights have healing abilities also. It is used by physicians all around the world to provide light therapy to babies who are suffering from jaundice. It is preferred over infrared rays as they come with some potential risks that can harm the body of a baby.
- Lightening devices like lamps or incandescent lights can only convert about 10-12% of the energy that is supplied to it. On the other LED lights convert entire (about 99%) energy they are fed or consume. Its efficiency is better than them.
- LEDs used for a long time get highly energized and due to this, they can become hot. But they cool down quickly and can be touched easily. They can maximum get heated up to 130-140 degrees Fahrenheit. On the other hand, halogen bulbs and other lights can become extremely hot when used for some time. It can cause serious burns as well if touched.
Though wholesale LED lights came into existence long back, about 40-50 years back, they have become famous in recent years. It has the ability to save a large amount of money spent every year on energy consumption. The savings may amount to about 16-17 billion dollars. It is a good option for sustainable development and use of sustainable energy also. People have realized its importance over another form of lightening device and that is why they are opting for it more and more.