I was interested in the "accelerationIncludingGravity" property. It seems needlessly verbose. I thought - why isn't there just isn't a separate "gravity" proper

I was interested in the "accelerationIncludingGravity" property. It seems needlessly verbose. I thought - why isn't there just isn't a separate "gravity" property to complement the "acceleration" property? After a bit of digging around I found this: http://lists.w3.org/Archives/Public/public-geolocation/2010Aug/0015.html http://lists.w3.org/Archives/Public/public-geolocation/2010A... > We can't use > acceleration & gravity in place of acceleration & > accelerationIncludingGravity as some devices are unable to determine > the acceleration without the effects of gravity - that's the > motivation for the property.