Here is the history of light, according to physics. Beyond what we can touch, taste, smell, and hear, we experience the universe through light. But how did we come to discover light, and how did we ...

In this show: How we got from candles made out of cow fat to as much light as we want. The history of light is the history of economic growth —... Episode 534: The History Of Light Note: This episode ...

For thousands of years, getting light was a huge hassle. You had to make candles from scratch. This is not as romantic as it sounds. You had to get a cow, raise the cow, feed the cow, kill the cow, ...