Accelerometer, Gravity and Linear Acceleration Query

I was reading through the sensor event documentation on the开发者_开发百科 android developer site. I am unclear as to whether or not the gravity and linear acceleration sensors are separate from the accelerometer. In other words, can the accelerometer measure gravity and linear acceleration?

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The accelerometer, gravity and linear acceleration sensors all use the same accelerometer, yes, they just output different values based on what they are conveying to the user.

I'd provide source-code proof but it looks like the android git repository browser is down for now.