The Low Pressure Sodium Lamp

29:08
How the gas mantle made lamps 10X brighter

7:52
The High Pressure Sodium Lamp (HPS)

33:37
Something Strange Happens When You Trust Quantum Mechanics

29:24
But why would light "slow down"? | Visualizing Feynman's lecture on the refractive index

15:08
More vaguely-informative ramblings about low pressure sodium lamps

1:09:10
Inventions étonnantes à voir | Meilleure compilation de 2024 !

28:53
60 Moments Incroyables d'Aviation Filmés

13:54