3 ms·
It mentions A0, the 1sqm area, then goes into paper weights. You might have accidentally skipped that section.
by ricardobeat 4y ago
It mentions A0, the 1sqm area, then goes into paper weights. You might have accidentally skipped that section.
- HPsquared 4y agoIt's pretty handy that 1 A4 sheet at 80gsm weighs 5 grams (A4 sheet area: 1/(2^4) = 1/16 of a square metre) * (standard paper weight of 80 grams per square metre) = (5 grams per A4 80gsm sheet). Would have been useful for calculating postage.
- chrismorgan 4y agoA few weeks ago my sister told me of a proposal for some contract that she’d been working on, and it ended up being 1600 pages, mostly double-sided A4, and printed in quadruplicate, and I rapidly worked out in my head, purely from the memory that A0 is 1m², that each subsequent paper size halves the area, and that 80g/m² is a common weight: that that was going to be something like 16kg of dead tree that was probably just going to clog up filing cabinets somewhere and mostly never actually be referred to. If I did this more often I’d remember 5g per sheet, but the mere fact that all this stuff is simple ratios and unit calculations means you can calculate it all from first principles quite easily. It’s really handy.
- Biganon 4y agoI'm a teaching assistant, and I use this calculation every time I have to organize a written exam "so every students needs 11 sheets of paper... times 234 students... times 5 grams... OK I need help to bring everything to the exam building"