"Density" is a tricky word. By shrinking the linear dimension of each "grain" by a factor of 10, the volumetric density improves by a factor of 1000. However, with hard drives, it's the /surface/ density that's important, thus the capacity would only improve by a factor of 100. Still a significant increase, but not as big.
Imagine a square platter that is 1 meter on each side. If your "grains" are cubes with sides of 10 cm, then you can fit 100 grains on the platter. If your grains are 1 cm, you can fit 10,000 on the platter. The height (depth) of the grains doesn't matter, it's how many you can pack onto the surface.
the Nook Color proved it was an undercover tablet all along, Barnes and Noble has hit back with this latest Nook as proof of its focus on one thing: reading.
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"Density" is a tricky word. By shrinking the linear dimension of each "grain" by a factor of 10, the volumetric density improves by a factor of 1000. However, with hard drives, it's the /surface/ density that's important, thus the capacity would only improve by a factor of 100. Still a significant increase, but not as big.
Imagine a square platter that is 1 meter on each side. If your "grains" are cubes with sides of 10 cm, then you can fit 100 grains on the platter. If your grains are 1 cm, you can fit 10,000 on the platter. The height (depth) of the grains doesn't matter, it's how many you can pack onto the surface.