New Tizen phone leaked: Remember it's not all just Android and iOS A second Samsung Tizen phone has been leaked showing that the nice mobile OS - which has the great merit of not being Android - hasn’t been forgotten by the Korean Company. Details of the new phone have appeared on the site Tizen Experts which not only shows the phone but gives some details of the specification. It’s got an …
It depends upon context and range. I worked in workshops where the unit is always mm, even for dimensions of over 1m. It avoids cock-ups of the "I thought you said..." variety. It is common to specify technical drawings as using mm, and thus a key dimension would be labelled as 1200mm and not 1.2m. It cuts down on mental processing overheads.
I'm sure you can appreciate that similar conventions exist within the context of hospitals, for good reason.
the battery is a 2.0 Ah not 2000 mAh as over 1000 the unit of milli is droped and the decimal point set in the in the right place.
Nope, that doesn't take into account precision, which is always +/- 1 of the last digit (if I recall correctly, it's been a while since I was a pedant :) ).
From a measurement perspective, 2000mAh is somewhere between 1999 mAh and 2001 mAh, whereas 2.0Ah is somewhere between 1.9Ah and 2.1Ah. That's quite a difference in accuracy.
"the battery is a 2.0 Ah not 2000 mAh" -- AC
You could call this battery a 7.200E+03 Coulomb (i.e. Amp second) battery, but as most people are interested in how long the battery lasts and what the phone's power consumption is, it is more appropriate, in this CONTEXT, to use the derived unit of Current x Time rather than Charge. Similarly, the scale, in this CONTEXT, suggests that we use mA rather than A (given the sorts of power consumptions that phones have) and h rather than s (given the sorts of durations that phone batteries last).
* Also, as an aside, 2.0Ah is not quite the same as 2000mAh: the former suggests (a hundred times) less precision (i.e 1950mAh to 2050mAh rather than 1999.5mAh to 2000.5mAh) although again an understanding of the CONTEXT would suggest to most people that the range of variability is unlikely to be as small as 1mAh
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