Tornado

AsSalyamu `Aleykum wa RahmatuLlahi wa Barakatuh,

Equipment: a bottle with a lid, water, vinegar, washing up liquid

1. Pour 2 third of water in our bottle, one table spoon of vinegar and one table spoon of washing up liquid. Mix

2. Start quickly rotating the bottle.

What happened: vortex appeared - whirlpool