Iauq Spectacular video and images of world s largest lava field in 200 years
The gold standard of random number generation is the quantum random number generator, which uses the phenomenon of quantum mechanics to produce strings of entirely random digits. But doing that cheaply and easily has been 8230; a challenge. But using mobile phone cameras鈥攚hich have improved so much in recent years that they ;re now apparently capable of detecting the quantum variations in the number of photons they detect鈥攎eans that about to change. The arXiv Blog explains what researchers at the University of Geneva in Switzerland have done: The quantum process that these guys exploit is the way light sources emit photons. Because each emission is a quantum process, the instant of emission cannot be predicted. So the number of photons that a light source emits in a unit of time will always vary by an amount that is
stanley cup entirely random. It straightforward to calculate the average number of electrons this process should produce, given the probabilistic nature of photon emission. But the actual number of electrons should differ by a number that is random. That produces a single random digit. And since a light-sensitive array con
stanley cup romania sists of many pixels working in parallel, it is possible to generate a large quantity of random digits from each image. They tested the theory out using a Nokia N9 smartphone, which features a pretty ordinary 8 megapixel rear-facing colour camera. Capable of ge
stanley cup nerating numbers at a rate of 1 megabit per second, the phone-based system h Xqfz How YouTube Works
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