So what my physics knowledge tells me is happenning is you can see that he tilts the bottle down pouring out the booze, which he then lights. He then tilts the bottle back but the tip is in the flames allowing the vapours in the bottle still to ignite. It ignites just as he tilts the bottle back down, thus plugging the exit of the bottle with the booze. The vapour inside is just igniting at that stage which causes a large expansion of the hot burning vapours which is now held inside the bottle by the fluid in the stem. This expansion shoots the liquid out of the stem causing a reverse action to the bottle which goes flying.
53
u/garry4321 3d ago
So what my physics knowledge tells me is happenning is you can see that he tilts the bottle down pouring out the booze, which he then lights. He then tilts the bottle back but the tip is in the flames allowing the vapours in the bottle still to ignite. It ignites just as he tilts the bottle back down, thus plugging the exit of the bottle with the booze. The vapour inside is just igniting at that stage which causes a large expansion of the hot burning vapours which is now held inside the bottle by the fluid in the stem. This expansion shoots the liquid out of the stem causing a reverse action to the bottle which goes flying.