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Apple Heart Study launches to identify irregular heart rhythms

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A pple has launched the Apple Heart Study app. An app which collects data on irregular heart rhythms using Apple Watch's heart sensor rate and notifies the user who may be experiencing atrial fibrillation(AFib). AFib, the leading cause of stroke, is responsible for approximately 130,000 deaths and 750,000 hospitalizations in the US every year. Many people don’t experience symptoms, so AFib often goes undiagnosed.   To calculate heart rate and rhythm on Apple Watch’s sensor, green LED lights flashes hundreds of times per second and light-sensitive photodiodes detect the amount of blood flowing through the wrist. The sensor’s unique optical design gathers signals from four distinct points on the wrist, and when combined with powerful software algorithms, Apple Watch isolates heart rhythms from other noise.  Apple is partnering with Stanford Medicine to perform the research. As part of the study, if an irregular heart rhythm is identified, participants will receive a no...
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How are data stored on magnetic stripe? Bank Cards|Hotel Key Cards

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Y ou must have seen a magnetic black coloured stripe on the back of a hotel key card or a bank card. But, do you know that some data are stored in these stripes and how data is written on these magnetic stripes?  The concept is similar to that which was used in audio cassettes or in videotapes where these stripes were divided into many sections and such stripe is made up of a material whose magnetic properties can be changed. The magnetic stripe on the back of a badge is composed of iron-based magnetic particles encased in plastic-like tape. Each magnetic particle in the stripe is a tiny bar  magnet  about 20-millionths of an inch long. When all the bar magnets are polarized in the same direction, the magnetic stripe is blank. Information is written on the stripe by magnetizing the tiny bars in either a north or south pole direction with a special electromagnetic writer which is basically a solenoid, called an encoder. The writing process, called ...
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5 Hi-Tech Cool Gadgets on Amazon

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