3 ms·
No 2 dimensions are important at least :) Regarding orientation, are you saying they printed half the book over the first half, but at right angles over the to
by benj111 7y ago
No 2 dimensions are important at least :)
Regarding orientation, are you saying they printed half the book over the first half, but at right angles over the top? Ie you see different data from different orientations?
Ps I've seen old (18th century?) letters where they wrote at 0, 90 and 45 degrees to get more on one page. Postage was charged by the page so it made sense. Newspaper also used to be taxed by the page (in the UK at least) so you had origami like folding of one sheet of paper into a newspaper, not aware of them 'double printing' in this way though. I assume that's why 'broadsheets' were so massive up until relatively recently.
- simonh 7y agoI think they encode the data as asymmetric marks in the material, with different orientations of the marks corresponding to different values. Imagine you could print a page containing just a grid of 100x100 numbers. If you can orient those numbers so the top of each digit could be facing up, down, left or right and use those 40 different glyphs to encode in base 40 instead of base 10, now you can fit 4x as much data into the same two dimensional area.