11. Individual data cells do not need a transistor, so packing density will be 4 times greater than DRAM. 12. Also slightly less than the maximum packing density of circles, but higher than that of the smoothed octagon. 13. The smoothed octagon achieves its maximum packing density , not just for a single packing, but for a 1-parameter family. 14. AOSLO has also revealed significant decreases in foveal cone packing density for myopic eyes in comparison to emmetriopic eyes. 15. It may be a really poor packing with a packing density of 0.1, not a cubic packing at all. 16. The maximum packing density of hard particles, an important problem of ongoing interest, depends on their distance of closest approach. 17. The associated packing density , " ? ", of an arrangement is the proportion of the surface covered by the circles. 18. Though the resolving power depends on the size and packing density of the photoreceptors, the neural system must interpret the receptors information. 19. Due to the stability of the material, it is able to be greatly reduced in size, making the packing density much greater. 20. For a periodic approximant to a quasicrystal with an 82-tetrahedron unit cell, they obtained a packing density as high as 85.03 %.
