Celestial Weasel (celestialweasel) wrote,
Celestial Weasel

Paper moon

As is often the case with these polls, when one sees the results one thinks of more questions. Mr zengineer may be disappointed that I don't have a profound point. I was just surprised that, once again, people at work looked at me as though I were mad when I said something about A[n] paper sizes.
So, anyway...
a) As presumably 5 of you know, the area of an A0 sheet of paper is a square metre. Size(A(n+1)) = 1/2 Size(A(n)). Therefore the size of an A4 sheet of paper is 1/16 of a square metre.
b) As mentioned in comments, the A series of paper sizes has the property that each size is got by halving the previous size along its long size. Therefore the ratio of the long side to the short side is sqrt(2) to 1.
c) Putting these facts together (viz the ratio and the fact that a sheet of A0 paper is a square metre) yields the sides of a sheet of A0 paper being 2^1/4 metres by 2^-1/4 metres (i.e. the square root of the square root of 2). Dividing these by 4 yields the size of an A4 sheet of paper.

  • Sweet municipal dreams

    I owe posts on a couple of things, but I break my long silence to commend the new Saint Etienne album, Home Counties, to you. It appears to be on…

  • The Hanging Tree - 2 questions

    Two questions... one is a plot one and one is a 'emotional authenticity' one Plot one: Did I miss something or is there no real explanation as to…

  • The Hanging Tree

    When more of you have read it I will be asking a couple of questions.

  • Post a new comment


    default userpic

    Your reply will be screened

    When you submit the form an invisible reCAPTCHA check will be performed.
    You must follow the Privacy Policy and Google Terms of use.