But an incandescent bulb only converts 5% of its energy into visible light. The rest is converted to heat. LED lights, on the other hand, have an efficiency of 40%-50%. This means LEDs use much less energy to produce the same luminosity as incandescent.
Nowadays, most LED lights can convert at least 80 to 90% of their electrical energy into light energy. Still, there is an electro-optical loss of 10% to 20%. And this wasted electric energy is the culprit behind the heat; though it is significantly low in comparison to other lights.
There are many light festivals in 2021 with the theme of light and shadow. Lighting installations integrating art and technology are impressive. Taking light as the medium, the works provided the audience with an artistic experience brought by modern technology.
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