Fighting Firedamp - The Lamp that Saved 1,000 Lives
57:39
The Science of Light and Lasers | Szydlo's At Home Science
1:00:52
Explosive Science - with Chris Bishop
34:49
People said this experiment was impossible, so I tried it
22:59
The Dome Paradox: A Loophole in Newton's Laws
4:53
Davy's Lamp - Periodic Table of Videos
15:27
اداوات وافكار مبتكرة مذهلة في خراطة المعادن
1:23:09
The chemical history of a candle - with David Ricketts
4:14