Like the iPhone 4s, the next iPad is going to have a screen so sharp that it doesn’t seem like it’s made up of discrete dots. But of course it is. They’re just densely packed: 3,145,728 of them clustered together at 264 pixels-per-inch, to be exact.
Which got me thinking: How big would the new iPad be, physically, if it were using the same screen technology as the gadgets people already own, like a laptop or a TV?
So I ran the numbers. The current iPad, for example, has a 9.7-inch, 1024 × 768 screen, which works out to a pixel density of about 131 PPI. In order to match the new iPad’s total number of pixels, the iPad 2 would need a 19-inch screen at its current pixel density. In other words: it would be huge.
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