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Google Glass for the NYPD

13.02.2014

The New York Police Department has begun testing "smart glasses" Google Glass. This was reported by VentureBeat, citing a senior law enforcement official.

The analytics and intelligence section of the department will evaluate the scores. Google Glass will be used during investigations, as well as "for patrol purposes." At the same time, it is not specified what kind of tasks the points will perform. Google Glass allows, for example, to conduct operational shooting, and with certain software, to compare people's faces with photos from the database.

On tests in the largest US department (it employs 34,5 thousand employees) are now "several pairs" of glasses. So far, it is not reported who provided the glasses to the police.

In an interview with VentureBeat, Google representatives clarified that they do not cooperate with law enforcement agencies. But there is speculation that someone from the department is involved in the Explorer program. This program makes it possible to get a copy of the glasses at your disposal. At the same time, the candidate who wants to test the device must be approved by Google, and the candidate himself, if approved, must pay $ 1500 for glasses.

The "trial" program will continue until the Google glasses are put into mass production. It is assumed that this will happen in 2014. After that, the glasses will be available for sale.

Google smart glasses can also be used by other emergency services. In January, for example, a California firefighter introduced an app for Glass that allows firefighters to communicate with each other and shows floor plans, hydrant locations, and emergency exits.

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A new type of strange quasicrystals 17.01.2019

Physicists and chemists at Brown University have for the first time created a self-assembling quasi-crystal lattice, consisting of quantum dots of a strictly defined shape. Similar quasicrystalline lattices have already been described mathematically and calculated in the course of complex computer simulations more than once, but no one has previously been able to demonstrate their creation, as they say, live.

We remind our readers that crystals are structures consisting of homogeneous components and possessing symmetry in one or more spatial coordinates. In other words, if we take any section of the crystal and shift it to a certain distance along the axis of symmetry, then the structure of the shifted section will completely coincide with the structure of the "unshifted" section. Quasicrystals do not have such a symmetry, their components are arranged in space in an ordered manner, but the structure of a quasicrystal does not repeat itself.

The mathematical description of quasicrystals is quite easy to create, but, as previously thought, the creation of aperiodic crystal structures in reality is impossible. Some time ago, scientists have already observed signs of the existence of quasi-crystals in aluminum alloys that have gone through a complex process of synthesis and heat treatment, and this fact was the first confirmation of the possibility of their existence. At present, the fact of the existence of quasicrystals is considered already proven, and they are considered a new potentially useful type of material.

So let's get back to the material created at Brown University. Interestingly, scientists initially did not even think about quasicrystals, their task was to find new methods for building macrostructures from nanosized components. One of the types of components was a pyramidal quantum dot, a tetrahedral particle, about one nanometer in size. Preliminary calculations have shown that such a shape will allow "packing" in a certain volume of space a greater number of such particles than particles of a traditional spherical shape.

Tetrahedral particles had one more feature, they behaved and interacted with neighboring particles in different ways, depending on their current spatial orientation. And as a result of this, after a while, all the particles spontaneously ordered, creating a complex structure, which is known as a quasi-transparent superlattice.

Electron microscope studies of this structure have shown that the particles form decagonal patterns, united by a symmetry of a kind never found in traditional crystals. The only exception is the boundaries of the material, where, in order to optimally fill the space, the particles are combined into patterns with fewer corners.

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