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Empty bottles quickly with a whirlpool trick (2012) [video]

themodernnomad.com

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Re: Empty bottles quickly with a whirlpool trick (2012) [video]

#4

Is it really faster when you account for the time needed to first create the whirlpool? Conveniently, the emptying "race" in the video only starts after the whirlpool has been created!

Time it yourself by spinning the bottle right after you begin pouring, and you will notice that it is still faster. ;)

Re: Empty bottles quickly with a whirlpool trick (2012) [video]

#5
post #4

Is it really faster when you account for the time needed to first create the whirlpool? Conveniently, the emptying "race" in the video only starts after the whirlpool has been created!

Time it yourself by spinning the bottle right after you begin pouring, and you will notice that it is still faster. ;)

So is there a way to do this trick without your hand touching the liquid?

Re: Empty bottles quickly with a whirlpool trick (2012) [video]

#7
post #6

I remembered seeing something along these lines a while ago, didn't realise it was as far back as 2012 though: https://www.reddit.com/r/askscience/comments/sv6kw/which_is_... I guess it's something that many people rediscover on a semi-regular basis.

I remember seeing the trick on Tomorrow's World (a UK science TV programme) back in the 90s. Can't find a link to the particular episode though.

Re: Empty bottles quickly with a whirlpool trick (2012) [video]

#8
"By creating a whirlpool inside the bottle, you’ve set up a corridor of air connecting the inside of the bottle with the outside air."

It didn't appear to me that the small vortex in the video actually reached all the way down to the mouth of the bottle.

Re: Empty bottles quickly with a whirlpool trick (2012) [video]

#9
post #4

Earlier quoted context omitted.

Time it yourself by spinning the bottle right after you begin pouring, and you will notice that it is still faster. ;)

So is there a way to do this trick without your hand touching the liquid?

Yes

https://www.youtube.com/watch?v=MLeYYMT-3BM

Re: Empty bottles quickly with a whirlpool trick (2012) [video]

#10

"By creating a whirlpool inside the bottle, you’ve set up a corridor of air connecting the inside of the bottle with the outside air." It didn't appear to me that the small vortex in the video actually reached all the way down to the mouth of the bottle.

I think you are wrong.
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