Portable Hydrogen Reactors - The Future Is Here
You’re on the go and your phone just ran out of juice, maybe you have a portable charger handy but it’s not likely that you will get more than one charge out of it. But what if you had a portable power generator which could provide enough power to run your phone for a week? This is where the Brunston Hydrogen Reactor steps in; you may recognise that it bears some similarities to the Horizon Fuel-Cell MiniPak, which just so happens to be the device it was modelled on. The main changes seen between the two are the aesthetics, an increase in sturdiness in the Brunston as it is marketed towards hikers and campers, and higher capacity fuel cells.
So how does it work?
The 3-inch fuel cells are full of hydrogen which is stored as a hydride and this hydrogen is split apart using a platinum catalyst as to separate the positively charged H+ ions and the negative electrons and use them to create a electrical potential gradient, or, voltage. The device then routes the electrons through some wires and a USB port to charge your device, while the H+ ions are expelled through an electrolyte membrane where they combine with oxygen to form water vapour.
As the hydrogen is stored in a hydride its stability is increased and the device has been cleared for carry-on luggage in airplanes - however you cannot carry more than two hydrogen cells with you. The cells feature a 8,500 mAh capacity at an output of 5V with a choice of either 1A or 2A which you can select using a toggle switch. Once a fuel cell is depleted they can be charged again in about an hour, but sadly this ability will have to wait until you get home as the device used to charge them isn’t portable and requires a wall socket. Brunton is working to find a way to provide free in-store charging stations as the at home hydrolyser charging device costs $250.
I for one am very excited to see this awesome tech hit the market and may make use of it for my long trips into the mountains with my camera in the future! What would you use this tech for a what improvements would you like to see in the future?
Help I can’t stop laughing, the sarcasm in this letter… I s2g.
'Mix and match': Mixing nanoparticles to make multifunctional materials
Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have developed a general approach for combining different types of nanoparticles to produce large-scale composite materials. The technique, described in a paper published online by Nature Nanotechnology on October 20, 2013, opens many opportunities for mixing and matching particles with different magnetic, optical, or chemical properties to form new, multifunctional materials or materials with enhanced performance for a wide range of potential applications.
The approach takes advantage of the attractive pairing of complementary strands of synthetic DNA-based on the molecule that carries the genetic code in its sequence of matched bases known by the letters A, T, G, and C. After coating the nanoparticles with a chemically standardized “construction platform” and adding extender molecules to which DNA can easily bind, the scientists attach complementary lab-designed DNA strands to the two different kinds of nanoparticles they want to link up. The natural pairing of the matching strands then “self-assembles” the particles into a three-dimensional array consisting of billions of particles. Varying the length of the DNA linkers, their surface density on particles, and other factors gives scientists the ability to control and optimize different types of newly formed materials and their properties.
Can our brains see the fourth dimension?
Most of us are accustomed to watching 2-D; even though characters on the screen appear to have depth and texture, the image is actually flat. But when we put on 3-D glasses, we see a world that has shape, a world that we could walk in. We can imagine existing in such a world because we live in one. The things in our daily life have height, width and length. But for someone who’s only known life in two dimensions, 3-D would be impossible to comprehend. And that, according to many researchers, is the reason we can’t see the fourth dimension, or any other dimension beyond that. Physicists work under the assumption that there are at least 10 dimensions, but the majority of us will never “see” them. Because we only know life in 3-D, our brains don’t understand how to look for anything more.
In 1884, Edwin A. Abbot published a novel that depicts the problem of seeing dimensions beyond your own. In “Flatland: A Romance of Many Dimensions" Abbot describes the life of a square in a two-dimensional world. Living in 2-D means that the square is surrounded by circles, triangles and rectangles, but all the square sees are other lines. One day, the square is visited by a sphere. On first glance, the sphere just looks like a circle to the square, and the square can’t comprehend what the sphere means when he explains 3-D objects. Eventually, the sphere takes the square to the 3-D world, and the square understands. He sees not just lines, but entire shapes that have depth. Emboldened, the square asks the sphere what exists beyond the 3-D world; the sphere is appalled. The sphere can’t comprehend a world beyond this, and in this way, stands in for the reader. Our brains aren’t trained to see anything other than our world, and it will likely take something from another dimension to make us understand.
But what is this other dimension? Mystics used to see it as a place where spirits lived, since they weren’t bound by our earthly rules. In his theory of special relativity, Einstein called the fourth dimension time, but noted that time is inseparable from space. Science fiction aficionados may recognize that union as space-time, and indeed, the idea of a space-time continuum has been popularized by science fiction writers for centuries. Einstein described gravity as a bend in space-time. Today, some physicists describe the fourth dimension as any space that’s perpendicular to a cube - the problem being that most of us can’t visualize something that is perpendicular to a cube.
Researchers have used Einstein’s ideas to determine whether we can travel through time. While we can move in any direction in our 3-D world, we can only move forward in time. Thus, traveling to the past has been deemed near-impossible, though some researchers still hold out hope for finding wormholes that connect to different sections of space-time.
If we can’t use the fourth dimension to time travel, and if we can’t even see the fourth dimension, then what’s the point of knowing about it? Understanding these higher dimensions is of importance to mathematicians and physicists because it helps them understand the world. String theory, for example, relies upon at least 10 dimensions to remain viable. For these researchers, the answers to complex problems in the 3-D world may be found in the next dimension - and beyond.
In a rare phenomenon, a huge ice disc spins in the Sheyenne River
An ice disc 55 feet [about 17 meters] across has been spotted swirling round and round atop the water of North Dakota’s Sheyenne River.
According to the Associated Press, record-setting air pressure combined with subfreezing temperatures to turn the river water to ice – but not all at once. When the first chunks of floating ice took shape, they got caught in the river’s eddy and started to spin in a circle, collecting into the disc seen here.
”It’s not a continuous sheet of ice,” said Allen Schlag, a National Weather Service hydrologist in Bismarck, ND. “If you were to throw a grapefruit-size rock on it, it would go through. It’s not a solid piece of ice — it’s a collection of ice cubes.”
Source: io9.com - Video: [x]
Texas Board of Ed votes to drop algebra II mandate -
AUSTIN, Texas (AP) — The Texas Board of Education gave preliminary approval Thursday to dropping algebra II as a requirement for high school gradua
This is ridiculous. Of ALL the math you learn, aside from arithmetic, algebra is the most useful in your daily life of them all. You may not be actively using it, but the estimation from basic problem solving abilities developed during it is what drives your life.
Need to figure out how much gas you need to get from point A to point B? How long the trip will take? How much money you’ll need to spend on the gas? That’s algebra.
Need to calculate your loan or card payments? Bank statements? Is there anything missing in the balances? Algebra.
Trying to figure out anything with money? Odds are, you’re doing algebra. That’s why it was invented — symbolic algebra made its arrival in Europe via secret groups of mathematician/businessmen during the Italian Renaissance who charged fees to balance business budgets and investigate fraud through their easy algebraic methods; they were even referred to as “symbolists”, since they worked their magic using arcan symbols (variables) on the screen.
And in our world, money is everything. It interacts with everything. It really is everything.
And you use algebra to do it, whether you know it or not. Depriving children of this seemingly “unnecessary” skill is ridiculous.
donut math 101
no michael, you don’t understand.
(Source: santagayartisan, via thatmathblog)
(Source: ericnovik, via 2radical3)