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"  1927: German physicist Werner Heisenberg formulates the uncertainty principle: It&amp;#039;s impossible to measure the physical property of anything without disturbing what you&amp;#039;re measuring. For example, trying to measure a particle&amp;#039;s position changes its speed. 2003: Japanese scientist Masanao Ozawa theorizes that Heisenberg&amp;#039;s limit of uncertainty could be lower than previously believed. He claims that researchers can measure a particle&amp;#039;s properties without disturbing others, or at least disturbing them less than Heisenberg thought. 2012: A team at the University of Toronto (pictured) uses a technique called weak measurement to delicately probe the properties of a single photon; the disturbance to the photon is less than the lowest uncertainty limit predicted by Heisenberg. Why You Should Care: For physicists developing quantum cryptography technology, the uncertainty principle is crucial. Information is encoded in photons that vibrate in a particular sequence, and only the sender and recipient have a key. If anyone else intercepts the communications, the photons&amp;#039; spin will be affected, and the intrusion will be detected. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/technology/a8544/just-how-certain-is-the-uncertainty-principle-14869320/>