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Planet Money

The history of light (classic)

Jun 5, 2024
Discover the fascinating journey from homemade candles to modern electric lights. Explore the labor-intensive process of candle-making and the historical significance of various lighting methods. Hear about the revolutionary shift from kerosene to electric lighting and the challenges faced by innovators like Thomas Edison. Learn how financing shaped the development of early power stations and the profound economic impacts of lighting advancements. Dive into the past while considering the future of light and its environmental implications.
21:23

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Quick takeaways

  • Advancements in lighting technology revolutionized society, transitioning from labor-intensive candles to efficient electric lamps.
  • The evolution of light sources serves as a historical indicator of economic development and productivity milestones.

Deep dives

Evolution of Light Sources from Ancient Times to Modernity

Throughout history, the evolution of light sources has dramatically impacted human progress. Initially relying on candles made of animal fat, which were labor-intensive to create, advancements led to whale oil and eventually kerosene, significantly brighter and more efficient sources of light. The transition to electric lamps, notably marked by the invention of the light bulb and its mass production, symbolized a pivotal shift towards widespread illumination, transforming the way society functioned after dusk.

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