Joyful light bulbs

In 2018 the LED lighting market was worth almost $52 billion and is expected to reach over $112 billion by 2024. But 200 years before LEDs were a multibillion-dollar industry, and decades before Edison showed up, light bulbs were an idea just starting to enter the minds of curious scientists.

Who Invented The Light Bulb? In 2018 the LED lighting market was worth almost $52 billion and is expected to reach over $112 billion by 2024. But 200 years before LEDs were a multibillio...

Who actually invented the light bulb?
Take a second to think...🧐

Before rushing to answer, it is worth noting that the light bulb was actually invented 71 years before Edison patented it. A century later, the revolutionary LED lights were invented.

Brief history of the light bulb :

1809: Humphry Davy attached a fine charcoal strip between the ends of the wires connected to a battery. This is considered to be
the first light bulb.

1840: Warren de la Rue put a coiled platinum filament inside a sealed vacuum tube. He created a long-lasting light, but it was far too expensive.

1875: Henry Woodward and Matthew Evans patented the light bulb, which was basically the same as that of three decades before.

1879: Joseph Wilson Swan presented an enclosed glass bulb, from which all air had been removed, platinum lead wires, and a light-emitting element made from carbon, which did not last very long when actually installed.

1880: Thomas Edison, having purchased Woodward and Evans’ patent, presented a light bulb with a carbonated bamboo filament with a lamp life of 600 hours. This was the first real commercial model.

1913: Irving Langmuir invented neon lights by filling the light bulb with an inert gas.

1997: Isamu Akasaki, Hiroshi Amano and Shuji Nakamura managed to create the first bright blue light-emitting diode (LED) lamp.

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