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.
Cook had previously hinted that the Apple Watch would need to be charged nightly. That 18 hours of battery life includes checking the time, receiving notifications, using apps, and doing a 30-minute workout. As with any device, battery life will vary depending on your usage.