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Length measurement, distance measurement, or range measurement (ranging) all refer to the many ways in which length, distance, or range can be measured. The most commonly used approaches are the rulers, followed by transit-time methods and the interferometer methods based upon the speed of light. Surveying is one ancient use of measuring long ...
Demonstration of the Measure app on an iPhone 7. Measure is an augmented reality measurement app available on devices running iOS 12 and above. Using Apple's ARKit, it allows users to measure objects by pointing the device's camera at them. [47]
The Apple Watch extended step-counting capability to Apple's first wearable device using the accelerometer and gyroscope integrated in the Apple S1 SIP (System in package). Apple Watch works in parallel with a connected iPhone to improve accuracy of the user's step count. [25]
The dating game may never be the same again, that’s right: the iPhone 12 Pro can measure people’s height. One of the new features on Apple’s most recent premium handset was the introduction ...
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By using a reticle with marks of a known angular spacing, the principle of similar triangles can be used to find either the distance to objects of known size or the size of objects at a known distance. In either case, the known parameter is used, in conjunction with the angular measurement, to derive the length of the other side.
A long-range laser rangefinder is capable of measuring distance up to 20 km; mounted on a tripod with an angular mount. The resulting system also provides azimuth and elevation measurements. A laser rangefinder, also known as a laser telemeter, is a rangefinder that uses a laser beam to determine the distance to an object.
An odometer for measuring distance was first described by Vitruvius around 27 and 23 BC, during the First Punic War, although the actual inventor may have been Archimedes of Syracuse (c. 287 BC – c. 212 BC). [1] Hero of Alexandria (10 AD – 70 AD) describes a similar device in chapter 34 of his Dioptra.