Who Invented The Light Bulb?
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In 2018 the LED lighting
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.
5 سال پیش
در تاریخ 1398/05/03 منتشر شده
است.
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