27-08-2003 21:33									#1
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When your hear (or heard this one, if you've heard it before), this fact:

quote: No piece of paper can be folded in half more than 7 times

Do/did you feel the urge to test it, to see if it actually was true?


I know I did... I believe it was 5 years ago I heard this fact for the first time, and I simply just had to test it back then



how about you..?

	27-08-2003 21:37									#2
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some proof of something like that was done at my school.

	27-08-2003 21:37									#3
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you mean folded in half more than 7 times? Cus I just put 7 creases in a posted note

	27-08-2003 21:40									#4
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6 on my own, 7 with the aid of a vice, nothing more. Guess it holds!

	27-08-2003 21:42									#5
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quote: Originally posted by Japher you mean folded in half more than 7 times?

Yeah, that's what I wanted to say... better edit the first post

	27-08-2003 21:48									#6
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Where is the proof for this? I'd like to see it

	27-08-2003 21:57									#7
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of course I tried it. frustrating, it is

	27-08-2003 22:02									#8
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1/7! (one divided by seven factorial) will give you the dimensions of the smallest piece of paper you can 'fold' to, relative to the dimensions of the original piece of paper.



Or for something way cooler, try this:

Take a piece of paper:

______________
| |
| |
|---------------------|
| |
| |
|_____________|


Fold the piece of paper in half, so that the folded edge is like this ---:

|---------------------|
| |
| |
|_____________|

Then proceed to cut the paper like so:


|--|------|--------|--| <- Folded edge
| | | | | | |
| | | | | | |
|___|_____|____|

You will have a gigantic loop through which you can walk.

Makes as much sense as folding a piece of paper 7 times.

	28-08-2003 08:35									#9
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Can't oragami masters defeat this though?

	28-08-2003 08:37									#10
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I think with a thin enough piece it can be done... although I recall the number being 10, not 7...

	28-08-2003 08:39									#11
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I heard about this 7 times thing too. And of course I had to try it.. couldn't do more than 7.

	28-08-2003 15:38									#12
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quote: Originally posted by Sava I think with a thin enough piece it can be done...

I have heard people have tried with extremely thing paper, but they failed also... Though it might be possible with som ehigh tech machinery, but not if you do it by hands...





But I'm ready to see if someone can prove me wrong

quote: Originally posted by Sava although I recall the number being 10, not 7...

I've only heard "7"...

	28-08-2003 16:04									#13
	Increase the size of your Attachments

I could fold an A4 or A3 office paper at quite high grammage (90 gsm) six times without any tools. Then I took a newsprint sheet from the centre of a newspaper that was both thinner and larger. I was able to fold that eight times, but it wasn't flat after the last fold.

So, a thin and large sheet of paper should be possible to fold more times than a small and heavy sheet.