Naked Science Forum

Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: mcjhn on 18/01/2011 14:30:18

Title: how does this open wine bottle with shoe trick work?
Post by: mcjhn on 18/01/2011 14:30:18: does happen like this?
1) wine bottle accelerates towards the wall
2) the inertia of the wine makes it want to stay in the same place so it flows towards of the neck end of the bottle (air gap opens up between wine and bottom of bottle).
3) the wine and the bottle are at same speed
3) the bottle hits the wall and almost instantly stops
4) but the wine continues to flow forward (like someone in a car), hits the bottom of the bottle and rebounds, hits the cork and pushes it out a bit
Title: how does this open wine bottle with shoe trick work?
Post by: CliffordK on 18/01/2011 14:36:20: I like that.

Keep in mind that most walls in any house less than 60 years old in the USA are made out of Sheetrock. They won't take the abuse. Lath probably won't like it either.
Title: how does this open wine bottle with shoe trick work?
Post by: graham.d on 18/01/2011 16:27:17: Wow! I don't know but I'm not going to use the technique on my 1997 Meursault.
Title: how does this open wine bottle with shoe trick work?
Post by: imatfaal on 18/01/2011 18:42:03: Ooo! I would be thinking of drinking a 97 Meursault unless you are certain that it will grow/keep for much longer. But then that tends to be why I don't keep wines - I search and search till I find an article saying best drunk now... so I do. Enjoy it though, whether now or later.

And no - don't even think of opening it with a shoe!
Title: how does this open wine bottle with shoe trick work?
Post by: lightarrow on 18/01/2011 19:31:30: Quote from: mcjhn on 18/01/2011 14:30:18

does happen like this?
1) wine bottle accelerates towards the wall
2) the inertia of the wine makes it want to stay in the same place so it flows towards of the neck end of the bottle (air gap opens up between wine and bottom of bottle).
3) the wine and the bottle are at same speed
3) the bottle hits the wall and almost instantly stops
4) but the wine continues to flow forward (like someone in a car), hits the bottom of the bottle and rebounds, hits the cork and pushes it out a bit
You forgot to say that the wine rebounds on the air gap of point 2).
Title: how does this open wine bottle with shoe trick work?
Post by: Don_1 on 20/01/2011 13:25:32: Hmmm, I have a couple of bottles of vintage Pomerol hanging around, shall I............

I prefer this beer bottle opener (http://www.youtube.com/watch?v=1qbl1aKu4OE&feature=related) myself.
Title: how does this open wine bottle with shoe trick work?
Post by: syhprum on 20/01/2011 17:47:55: It is nice to get some really useful information instead of fretting about blackholes and antimatter
Title: how does this open wine bottle with shoe trick work?
Post by: lightarrow on 20/01/2011 21:24:26: Quote from: syhprum on 20/01/2011 17:47:55
It is nice to get some really useful information instead of fretting about blackholes and antimatter
Yes, and what is more amazing is that news about physicists studying hydrodynamics who claimed to have observed the (analogous of) Hawking radiation. So maybe wine and black holes are not so unrelated, after all [:)]
Title: how does this open wine bottle with shoe trick work?
Post by: yor_on on 21/01/2011 15:34:19: Depend on how many bottles consumed I think :)
Title: how does this open wine bottle with shoe trick work?
Post by: lightarrow on 21/01/2011 19:54:00: Quote from: yor_on on 21/01/2011 15:34:19
Depend on how many bottles consumed I think :)
Of course [;D]
Title: how does this open wine bottle with shoe trick work?
Post by: syhprum on 21/01/2011 22:47:50: I once misguidedly consumed a bottle of genuine elderberry wine (not cider with a drop of elderberry flavour) not realising how poisonous it was and felt like I was falling into a blackhole.

http://museum.gov.ns.ca/poison/?section=species&id=117
Title: how does this open wine bottle with shoe trick work?
Post by: Geezer on 22/01/2011 05:20:15: The shoe technique is probably not the best idea if there is a lot of stuff settled at the bottom of the bottle, but for average plonk, who cares.

I wonder if the same approach would work if the bottle was inverted in a sort of motorized impact cradle? People seem to be prepared to spend sacks of denarii for fancy cork removing devices.
Title: how does this open wine bottle with shoe trick work?
Post by: Don_1 on 22/01/2011 12:28:33: That's true Geezer, people will fork out lunatic sums to buy some strange new fangled bottle opener and then buy real cheap plonk. Still, it can be useful for clearing the drains.
Title: how does this open wine bottle with shoe trick work?
Post by: CliffordK on 22/01/2011 12:36:41: Does the same thing work on the floor which is often more solid than walls?
Title: how does this open wine bottle with shoe trick work?
Post by: Geezer on 22/01/2011 19:21:00: Quote from: CliffordK on 22/01/2011 12:36:41
Does the same thing work on the floor which is often more solid than walls?

I think it relies on the wine compressing the air at the bottom of the bottle, then the wine accelerates rapidly towards the cork and the reaction, when it hits the cork, nudges it out of the bottle..

If the bottle is vertical with the cork at the top, there will always be air between the cork and the wine which will prevent the mass of the liquid from impacting the cork.

The other thing is that the wine in the neck of the bottle acts on quite a small area of cork, but it has the momentum of the entire mass of wine behind it.
Title: how does this open wine bottle with shoe trick work?
Post by: graham.d on 23/01/2011 13:45:16: Someone told me another shoe-related method of getting a cork out of a wine bottle. The shoe has to have laces! You push the cork into the bottle, take a shoe lace (for example) and tie a large knot in it. Push the knot below the cork and then allow the cork to loat up to the top of the bottle with the knot below it and the free end of the lace outside the bottle. The pull the lace so that the knot, jammed under the cork, pulls the cork out.

I've never tried it.
Title: how does this open wine bottle with shoe trick work?
Post by: CliffordK on 23/01/2011 23:58:30: You guys are just about convincing me to take up drinking [xx(].... so I can try some of these new Physics Experiments. [^]
Title: Re: how does this open wine bottle with shoe trick work?
Post by: daveshorts on 08/05/2012 11:47:06: We did this on the show and found out it was due to cavitation:
http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/opening-a-bottle-of-wine-without-a-corkscrew/