curvature noun [U or C]. âº the âstate of being âcurved or âbent: the curvature of the earth's âsurface a âpronounced curvature of the âspine. (Definition of curvature from the Cambridge Advanced Learnerâs Dictionary & Thesaurus Â© Cambridge University Press). See all translations.
The Apple Watch uses your age, gender, height and weight, in addition to the GPS in your iPhone and data from its own built-in sensors, to calculate both your resting calories and ones you burn during exercise.
Apple says that you should calibrate your Apple Watch, for better accuracy. This isnât complicated: just walk or run outdoors with your iPhone for 20 minutes or more, and the Apple Watch should calibrate using the GPS to determine how long your stride is at different speeds. Iâve done this, twice.n Sunday, the Apple Watch counted a total of 3,915 calories, compared to 2,752 for the Fitbit app. Iâm not sure how these numbers can be so widely divergent. I tend to think the Fitbit app is more realistic (neither can be accurate, since measuring calories is a bit of black magic).