The History of Chemistry
Chemistry is everywhere, and involves everything. But how did chemistry get to be what it is? I'm Steve Cohen, a chemist and writer, bringing you The History of Chemistry. This podcast explores the development of chemistry from prehistoric times to the present, including the people and societies who made chemistry what it is today. The History of Chemistry is for you, whether you hated chemistry in high school, or got a PhD in inorganic chemistry. We'll explore how chemistry affected art, music, language, politics and vice-versa. Whether it's ancient Greek philosophers, medieval alchemists, or modern laboratory apparatus, it's all here. Don't forget to support my series at https://www.patreon.com/thehistoryofchemistry !
The History of Chemistry
124: Lumen Large
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Steve Cohen
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Episode 124
Our history of LEDs continues with the entry of LEDs into commercial lighting. We talk of different ways to get white light out of LEDs, and materials for white-light LEDs. We briefly discuss color temperature because there are different kinds of white. Then we hear of the publication of an article in 2000 that consolidated thinking about home usage for LEDs, and why LEDs have advantages over other lamps. We mention ways geometrically to optimize LED construction to maximize the amount of light emitted. Finally, we note the development of second-generation emitting compounds in red, green, and blue that pushed LEDs over the finish line to make them practical for home usage.
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