Apologies in advance for this complete noob question.
I noticed that the Material Design website publishes device metrics at https://material.io/devices/ and includes screen dimensions in dp (density-independent-pixels). Google's definition of dp's is as follows:
"A dp is equal to one physical pixel on a screen with a density of 160."
I assume the density they're talking about is the pixels-per-inch (or ppi) density.
Using the above information, one would think that a device like the iPad, which has a screen size of 768x1024 in pixels, and a ppi of 132, would have a dp size of 931x1241 dp. But the Material Design device metrics page still lists the iPad's dp size as 768x1024 dp (same as in pixels), which would imply that 1 pixel on the iPad is equal to 1 dp. Which couldn't be the case because it's not a 160 ppi screen, right? Or what am I completely missing?