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Ghost imaging (also called "coincidence imaging", "two-photon imaging" or "correlated-photon imaging") is a technique that produces an image of an object by combining information from two light detectors: a conventional, multi-pixel detector that does not view the object, and a single-pixel (bucket) detector that does view the object. [1]
The alarm points on carbon monoxide detectors are not a simple alarm level (as in smoke detectors) but are a concentration-time function. At lower concentrations, e.g. 100 parts per million (PPM), the detector does not sound an alarm for many tens of minutes. At 400 PPM, the alarm sounds within a few minutes.
You can reset your iPhone to its factory settings and erase all the information stored on the device. Just make sure to back up your data first.
The post How to Factory Reset Your iPhone to Delete Everything on It appeared first on Reader's Digest. Before selling or recycling your old one, take these steps to protect your personal data.
The camera on the iPhone 5 are protected by a sapphire lens cover, as are all subsequent models. [56] In 2014, Apple consumed "one-fourth of the world’s supply of sapphire to cover the iPhone’s camera lens and fingerprint reader." [57] The quality of the sapphire on the lens cover has since been disputed. [58]
Yes! You can take your email on the go with an iOS & Android app.
Get a daily dose of cute photos of animals like cats, dogs, and more along with animal related news stories for your daily life from AOL.
The iPhone 12 features a 6.1-inch (155 mm) display [33] with Super Retina XDR OLED technology at a resolution of 2532 × 1170 pixels and a pixel density of about 460 ppi. [34] The iPhone 12 Mini features a 5.4-inch (137 mm) display with the same technology at a resolution of 2340 × 1080 pixels, and a pixel density of about 476 ppi.