History of the First Light Bulb
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Why was the light bulb invented? Edison wanted to create a light bulb that would provide consistent, even light, accessible to ordinary people.
But the light bulb timeline began almost 80 years before Edison patented his carbon filament in . He built on existing research, including Sir Humphrey Davy&#;s platinum filament&#;the first ever incandescent light&#;from , and James Lindsay&#;s longer-lasting incandescent light from .
The existing versions were too expensive for personal or home use, even for the very wealthy. Edison solved this problem by experimenting with filament materials, breaking through with a bamboo filament that lasted 1,200 hours, the longest lasting bulb to date.
Edison didn&#;t stop there. He invented numerous technologies that made widespread use of light bulbs more practical for society. For example, he invented conduits, which allow electricity to be distributed from a centrally-located generator.
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While Edison&#;s technological innovations were incredible for their time, by the s, incandescent bulbs still wasted about 90% of their energy as heat. Researchers began to look for solutions.
An LED strip light is typically half an inch (10-12 mm) in width, and up to 16 feet (5 meters) or more in length. They can be cut to specific lengths using just a pair of scissors along the cutlines, located every 1-2 inches.
Individual LEDs are mounted along the strip, typically at densities of 18-36 LEDs per foot (60-120 per meter). The light color and quality of the individual LEDs determine the overall light color and quality of the LED strip.
The backside of the LED strip includes pre-applied double-sided adhesive. Simply peel off the liner, and mount the LED strip to virtually any surface. Because the circuitboard is designed to be flexible, LED strips can be mounted on curved and uneven surfaces.
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