Police officer blinded by science, argues physicist
To get out of a $400 stop sign violation, a physicist at the University of California, San Diego, uses math in his defense.
The next time you find yourself in traffic court, add the "Krioukov defense" to the list of strategies you can use to weasel your way out of a stop sign violation.
Dmitri Krioukov invoked the laws of physics to beat the $400 traffic ticket he was issued when a police officer observed him allegedly running a stop sign,according to an article in Physics Central. The University of California, San Diego, physicist drafted a four-page paper detailing his defense, arguing that the police officer mistakenly thought he ran the stop sign owing to a unique combinations of events.
Krioukov explained that the officer, who was parked 100 feet away from the stop sign, was approximating his angular velocity rather than his linear velocity, which could give the observer a
different perception of the driver's actual speed. Using graphs and mathematical formulas with lots of squiggly lines and symbols, Krioukov argued that to an observer, a vehicle traveling at a constant speed could look very similar to a vehicle decelerated quickly (supposedly to a complete stop), and then accelerated quickly again if at the exact moment the vehicle came to a stop the observer's view was obscured.
And of course, that scenario is exactly what happened, wrote Krioukov.
As Krioukov was driving his compact Toyota Yaris down the road he sneezed as he approached the stop sign, resulting in a very hard brake. The stopping distance of the Toyota Yaris isn't published by the auto manufacturer, but Krioukov estimated that he decelerated at 22.36 mph. At that same time, a larger vehicle, about the size of a Subaru Outback, passed hiscarand obstructed the officer's view of his full and complete stop.
These graphs show what an object's angular velocity (left) would look like if it traveled at constant speed, compared with its linear velocity (right) when it quickly decelerates and accelerates.
(Credit: Dmitri Krioukov)
The Outback-size vehicle didn't have a stop sign, but Krioukov argued that the car's larger length hid his Yaris for crucial seconds. As he accelerated quickly, as Yarises are known to do, the officer mistakenly thought he never stopped at all.
This graph shows how angular velocity can look like linear velocity when an object obscures the observer's view at precisely the right time.
Without a way to call BS on this argument, the judge let the ticket go. Regardless of whether Krioukov's argument was solid, the magistrate and the state probably found it easier to dismiss the case than to admit they had no idea what the physicist was talking about.
Apple's iconic iPhone was almost released with a physical keyboard. Apple reportedly considered the phone design before finally deciding on the handset's touchscreen-only form factor. Tony Fadell, who was previously Senior Vice President of the iPod division of Apple, talked about the early days of the iPhone during a recording of On The Verge Friday. Fadell worked with the company for 18 generations of the iPod and the first 3 generations of the iPhone. In 2010, he started his own company, Nest, which makes smart thermostats.
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According to Fadell there were three versions of the iPhone in the works: an “iPod + iPhone, a device called the iPhone, and then finally the iPhone we know and love that was released in 2007. Fadell, who worked on the iPhone through the iPhone 3GS said he was personally in favor of the touchscreen-only design.
While Apple was a pioneer in iPhone's original design, it's a…
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The HSBC India Manufacturing Purchasing Managers' Index (PMI), compiled by Markit, rose to 54.9 in April from 54.7 in March.
The index has remained above the 50-mark that divides growth from contraction for more than three years.
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The new orders sub-index rose to 61.1 in April after falling to 58.1 in March, buoyed by strong exports, but while remaining solidly above 50 the factory output index fell for the third straight month.
However, actual industrial output data is painting a bleaker picture with India posting slug…