How geometry geeks get free drinks

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.
 

mugs

Lifer
Apr 29, 2003
48,920
46
91
Originally posted by: MichaelD
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.

:thumbsup:

But it'd work on drunk people.
 

MrPickins

Diamond Member
May 24, 2003
9,124
787
126
For the circumference to equal 27cm like they said, it would only take a diameter of 8.75cm or 3.4in.
Doesn't sound too out of line to me.

If he cheated, it's only because he screwed himself by adding too many ashtrays underneath.
 

child of wonder

Diamond Member
Aug 31, 2006
8,307
176
106
Circumference is (Pi x diameter) so if the glass is 15cm high, the diameter of the top would need only be 4.8cm or more for the circumference to be greater than the height.
 

coolred

Diamond Member
Nov 12, 2001
4,911
0
0
I don't think he cheated, unless I am misunderstanding how you think he did so. If you look when he first unfolds the napkin, it has 4 sections, with folds between each. When he stands it up at the end it still has 4 sections. But maybe I am missing something about when he folds the napkin around the cup.
 

thelanx

Diamond Member
Jul 3, 2000
3,299
0
0
Even though I know the mathematics behind it, I still feel a little weird when I go buy pants and my waist size is larger than my inseam size (And I am usually considered slim by most people).
 

goog40

Diamond Member
Mar 16, 2000
4,198
1
0
That's retarded. I think it's pretty clear that the height of the glass plus the other items is much greater than 3.14 times the diameter of the rim of the glass.
 

SpecialEd

Platinum Member
Jul 18, 2001
2,110
0
0
There is no need to speculate if he cheated or not.

Just test it on a glass at home. I just tried it on a coffee mug sitting on my desk. The circumference is nearly the height of a sheet of paper! I don't think he cheated.
 

Howard

Lifer
Oct 14, 1999
47,982
11
81
Originally posted by: MichaelD
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.
Do the math.
 

tfinch2

Lifer
Feb 3, 2004
22,114
1
0
Originally posted by: MichaelD
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.

:confused:
 

Miramonti

Lifer
Aug 26, 2000
28,653
100
106
Originally posted by: MichaelD
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.

Absolutely correct imo. The napkin was folded for measuring, and then unfolded for comparison.
 

Ameesh

Lifer
Apr 3, 2001
23,686
1
0
circumfrence = 2 * pi * radius, if the beer glass is 15 centimeters tall then the radius of the opening needs to only be 2.4 centimeters to be equal to the height which is slightly under 1 inch for you guys you arent comfortable in metric

if the opening of the glass is more then 2 inches then this guy wins.

 

tfinch2

Lifer
Feb 3, 2004
22,114
1
0
Originally posted by: jjsole
Originally posted by: MichaelD
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.

Absolutely correct imo. The napkin was folded for measuring, and then unfolded for comparison.

http://pics.bbzzdd.com/users/tfinch2/glass1.jpg
http://pics.bbzzdd.com/users/tfinch2/glass2.jpg

Height of glass is 7 inches, circumference is about 9.42 inches, and this glass has about an extra 3/4" of glass on the bottom.
 

Midlander

Platinum Member
Dec 21, 2002
2,456
1
0
Originally posted by: tfinch2
Originally posted by: jjsole
Originally posted by: MichaelD
He cheated. He had the napkin folded over in his LEFT hand. I watched it over and over. His fat hands hide the bulk of the napkin.

The camera angle changes quickly, so it's hard to spot. But you can see as he's preparing to wrap the napkin around the glass, the napkin is really long. As he UNwraps it, it looks really short, then suddenly when the camera changes angle, it's really long again.

Slight of hand and bullshiit. He cheated.

Absolutely correct imo. The napkin was folded for measuring, and then unfolded for comparison.

http://pics.bbzzdd.com/users/tfinch2/glass1.jpg
http://pics.bbzzdd.com/users/tfinch2/glass2.jpg

Height of glass is 7 inches, circumference is about 9.42 inches, and this glass has about an extra 3/4" of glass on the bottom.

I agree with the math, but he still did something strange. Take a look at the bottom section of the napkin when he unfolds it and compare it to the measurement.

Note that twice the height of your glass is much greater than the circumference.