I bet the rest of the world has better paper
I bet the rest of the world has better paper
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55 comments
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Well yes, the rest of the world does have better paper. 21×29.7, the only ratio to conserve itself when halving the sheet
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Wait, is that true? Is there something special about that ratio in particular that lets it conserve ratio when dividing?
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And IIRC, A0 is 1m²
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There also is B0, which is exactly 1 by the root of 2 meters.
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Beautiful.
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Yes it's true. It's the square root of 2, which is why it works.
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Legend has it that Leonardo da Vinci came up with it
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Legend has it he came up with catgirl memes, too.
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Here's a fun CGP Grey video on the matter: https://youtu.be/pUF5esTscZI?si=9czdx4u8jWruZoui
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untrackered link: https://youtu.be/pUF5esTscZI
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Here is an alternative Piped link(s):
https://piped.video/pUF5esTscZI
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I'm open-source; check me out at GitHub.
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Here is an alternative Piped link(s):
https://piped.video/pUF5esTscZI?si=9czdx4u8jWruZoui
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I'm open-source; check me out at GitHub.
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Here you go, proof at ~2 min in.
Edit: for those who don't want to use YouTube anymore. If a is the long side and b is the short side of a rectangle. Halving the rectangle will make the long side b and the short side 1/2 a. If the ratio is preserved when halving, we get:
a/b=b/(1/2 a)
a^2=2b^2
a^2/b^2=2
a/b=sqrt(2)
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Here is an alternative Piped link(s):
Here you go, proof at ~2 min in.
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I'm open-source; check me out at GitHub.
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Yes, this particular ratio allows the fact that you can fold a A3 paper in two and get two A4 sheet
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Besides the Grey video heres an oldie but goodie Numberphile video about it
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Here is an alternative Piped link(s):
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I'm open-source; check me out at GitHub.
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It's called the Golden Ratio and has a lot of neat properties! Da Vinci and other nerds love(d) using it in art.
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I didn't know there are part of the world which doesn't put A4 in their printers
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Relation 1 to SQR 2, from A0 of 1m2 to A5 letter format (A4, A5 most used in the EU), every time the half of the next bigger format. Easy to remember.
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55 comments