How long does an LED light bulb last?
Traditional incandescent light bulb fare a thing of the past (manufacturing them is prohibited in the European Union). Normally, they last around 1,000 hours before burning out.
Halogen light bulbs, which represented a step forward, can reach up to 3,000 hours. .
Low consumption light bulbs defied conventions by exceeding 15,000 hours of useful life.
Then, LED technology, arrived with light bulbs that last approximately 50,000 hours. This is equivalent to having them turned on for 5 years without interruption.
How do LED light bulbs work?
LED technology is based on diodes. In fact, LED stands for Light Emitting Diode.
The diode is an electronic component with two points that allows the circulation of energy through it in one single direction. By being a semiconductor, it allows the electrons to pass and creates electromagnetic radiation in the form of light.
Because this component can vary its intensity, LEDs are capable of generating a nearly infinite combination of colours.
Origin of LED light bulbs
In 1927, the Russian Oleg Lósev started to experiment with this technology. However, his discovery went unnoticed for decades until being recognised in late 20th Century.
The first LED emitted in the visible spectrum was developed in 1962 . Their system changed the paradigm of lighting and was improved until the Japanese Isamu Akasaki and Hiroshi Amano and the American Shuji Nakamura developed the light bulb we know today.
Based on their research, Nakamura, Akasaki and Amano were awarded the 2014 Nobel Prize in Physics.