How to use, more info, and further thoughts on hurricane (Dietz) lanterns
31:46
Why do hurricane lanterns look like that?
17:53
Even *more* humidifier thoughts!
18:15
So... the minute hand shows progression — apparently we think of time in wildly different ways
10:35
China vs German Oil Lamps! Not even fair
29:08
How the gas mantle made lamps 10X brighter
18:58
Dietz vs Feuerhand oil lanterns : There’s still a clear winner
24:52
What if all the world's biggest problems have the same solution?
21:40