Toggle light / dark theme

The Army Is Testing Handheld Ray Guns

Circa 2015


Fittingly, these rifle-sized weapons would gun for other electronics.

Pew! Pew! Soldiers with handheld energy blasters are the stuff of G.I. Joe, not real life … until now. The U.S Army is currently testing electricity guns for possible use against electronics on the battlefield. They don’t look like props from the popular cartoon show but, rather like regular standard-issue M4 rifles with a pair of antennas that shoot out from the barrel and then spread, giving the front end of the gun a musket-like shape.

Soldiers “already carry rifles. Why not use something that every soldier already carries,” said James E. Burke, an electronics engineer with the U.S. Army’s Armament Research, Development and Engineering Center, or ARDEC. Burke spoke with Defense One at a National Defense Industry Association event in Baltimore on Tuesday.

Inspired by ‘Back to the Future,’ this machine turns food waste into energy

Many people in the Northwest separate out their table scraps, wilted leaves and old fruit, carting them off eventually to a compost bin or joining their grass clippings and pruning remains in the green waste bin. In the City of Seattle, food waste is required to be separated from garbage.

But most of our actions still revolve around a simple concept: Collect your household waste, sit it on the curb, and somebody will come and pick it up. Businesses do the same thing, just on a larger scale. We have applied industrial-age logic to waste: create a production line that starts at a home or business, automate as many of the tasks as possible, and coordinate through centrally managed processes and destinations.

This centralized approach to waste collection is labor and energy intensive, and it doesn’t give back much.

First direct look at how light excites electrons to kick off a chemical reaction

The first step in many light-driven chemical reactions, like the ones that power photosynthesis and human vision, is a shift in the arrangement of a molecule’s electrons as they absorb the light’s energy. This subtle rearrangement paves the way for everything that follows and determines how the reaction proceeds.

Now scientists have seen this first step directly for the first time, observing how the molecule’s electron cloud balloons out before any of the in the molecule respond.

While this response has been predicted theoretically and detected indirectly, this is the first time it’s been directly imaged with X-rays in a process known as molecular movie-making, whose ultimate goal is to observe how both electrons and nuclei act in real time when chemical bonds form or break.

Today in 1888, Nikola Tesla’s patent has been granted for “electrical transmission of power.” 😍

As the holder of more than 270 patents in 27 countries—including 112 in the US alone—Tesla rightfully earned his place in history, but not every invention of Tesla made it to production. With that in mind, we combed through the records and found 7 of Tesla’s most substantial inventions that never got built.

To find out: https://bit.ly/2y7SpuA 🚀.

‘Hydrogen-On-Tap’ Device Turns Trucks Into Fuel-Efficient Vehicles

A cherry-red pickup truck in Carmel, Indiana runs on hydrogen without carrying any fuel cells. The engineer who developed this “hydrogen-on-tap” system hopes it can someday power cargo trucks and cruise ships worldwide.


The city of Carmel, Ind., has trucks for plowing snow, salting streets, and carrying landscaping equipment. But one cherry-red pickup can do something no other vehicle can: produce its own hydrogen.

A 45-kilogram metal box sits in the bed of the work truck. When a driver starts the engine, the device automatically begins concocting the colorless, odorless gas, which feeds into the engine’s intake manifold. This prevents the truck from guzzling gasoline until the hydrogen supply runs out. The pickup has no fuel cell module, a standard component in most hydrogen vehicles. No high-pressure storage tanks or refueling pumps are needed, either.

Instead, the “hydrogen-on-tap” device contains six stainless steel canisters. Each contains a 113-gram button of an aluminum and gallium alloy. A small amount of water drips onto the buttons, causing a chemical reaction that splits the oxygen and hydrogen contained in the water. The hydrogen releases, and the rest turns into aluminum oxide, a waste product that can be recycled to create more buttons. Back in the garage, the driver can replace spent canisters with news ones to replenish the hydrogen supply.

The Rise of the Fifth Reich?

Over at the always interesting Small Wars Journal, Tony Corn has a stimulating piece on the implications of the European crisis for world politics. He sees a clueless German policy establishment recklessly moving toward an unsustainable quest for power reminiscent in too many ways of problems Germany has had in its past.

Germany, warns Corn, is planning to use its financial domination of Europe to remake the EU into an extension of German power — more or less the way that Prussia used the Zollverein to bring northern Germany under its control and then dominated the Bismarckian Reich through a rigged constitutional system. Once that is in place, he writes, the Germans will continue their policy of deepening relations with Russia at the expense of NATO and transatlantic ties, and end Europe’s embargo on arms sales to China.

As an analyst, Corn sometimes goes to what we more placid types at VM consider overexcited conclusions about Eurasian power realignments. Safely ensconced among the storied oaks and elms, gazebos, pergolas, ha-has, follies and deer parks surrounding the stately Mead manor in glamorous Queens, we tend to take a wait-and-see attitude toward organizations like the Shanghai Cooperation Organization which Russia and China have sometimes posited as a kind of embryonic counter-NATO. Corn, in our perhaps excessively complacent view, can be too quick to take vague Eurasian fantasies and aspirations about diplomatic revolutions as accomplished facts; it is easier to dream about firm Russian and Chinese anti-US cooperation than for those two countries to make it work. But that said, there is no doubt that Corn’s industry, historical grounding and sensitive, even over-sensitive nerve endings give him the ability to produce original and striking ideas.

A new flexible piezoelectric composite for 3D printing

Researchers at Peking University, Southern University of Science and Technology and the University of Jinan in China have recently designed a ceramic-polymer composite that can be used to print complex 3D grid architectures. This composite, first presented in a paper published in Nano Energy, was found to exhibit a number of desirable properties, including high flexibility and a high electromechanical energy conversion rate.

Piezoelectric ceramic materials, such as Pb(Zr, Ti)O3 (PZT) typically have remarkable electromechanical energy conversion capabilities. However, most of these materials are inherently rigid, which makes them far from ideal for the fabrication of flexible electronics.

“Normally, are brittle, therefore, they are not suitable for integration into flexible electronics directly,” Shuxiang Dong, one of the researchers who carried out the study, told TechXplore. “We wanted to develop a 3D-printed, soft piezoelectric ceramic composite material that is a heat-curable polymer exhibiting mechanical flexibility and a large electromechanical voltage in response to environmental mechanical vibrations or force stimuli. Luckily, we made it, and our composite has great potential to be used for future soft sensors.”