- Sustainable
£16.99Plus shipping
Sacks spiral on Lunchbox
The best moment of a school day? Breakfast time, of course! In this food-safe box, your sandwiches will remain fresh for many hours to come. The lunch box fits in every bag – whether it’s a satchel, gym bag or backpack – and is available in a variety of colours.
Tip: Hand-washing will make the print last even longer
- Made of scratch-free and very durable plastic
- Easy to use, secure double lock
- Small air holes to keep it fresh
- Dimensions: 185 x 128 x 65 mm
- Food safe according to Regulation EC No. 1935/2004 and EU No. 10/2011
- Material: Plastic, aluminium
- BPA-free
- A - Length in in
- B - Width in in
- C - Length in in
| Size | A (in) | B (in) | C (in) |
|---|---|---|---|
| One Size | 5.04 | 7.28 | 2.56 |
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Created by inuqio
Sacks spiral
Created by inuqio
In the Sacks spiral, the values are plotted on an Archimedean spiral instead of the square spiral used by Ulam. With each full revolution, a perfect square is created.
Tags: prime number, maths, infinite, maths teacher, arithmetic, Mathematics, number, teacher, 1994, nerd, prime, chaos, Infinity, spiral, coordinates, cryptography, mathematician, crypto, Archimedes, geek, Polar coordinates, 4711, circle, number theory, Robert Sacks
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