LATEST ARTICLES ON TECHNEPAL

capacitors - Technepal.x10.mx

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Capacitor can acts as a charge storage device which can discharge in a fraction of second. It blocks the DC when fully charged but always allows AC to pass. The main parts of capacitor are dielectric and conducting plates. Dielectrics has high permittivity and they are very thin. So plates of capacitors can be placed very close to each other. As a result, dielectric acts to increase the capacitor's charge capacity as well as to reduce size of capacitor.
Hydrogen - Ammonia - Technepal.x10.mx

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Instead of using a catalyst, two simultaneous chemical process occurs to produce hydrogen and it can achieved at a fraction of cost. A small amount of hydrogen mixed with ammonia is sufficient to provide combustion in a conventional car engine. Ammonia decomposition reactor no bigger than a 2-litre bottle will provide enough hydrogen to run a mid-range family car.
inFORM diagram - Technepal.x10.mx

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By moving each actuator, inFORM can move the pin, allowing for a wide range of interactions. A projector mounted above the surface provides context to the shape shifting pins, giving them color and highlighting depth. In a video released by MIT, the table is shown moving a ball, displaying 3D charts, and giving an extremely visible smartphone notification.
Mind-controlled exoskeleton for World Cup 2014 - Technepal.x10.mx

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Mind-controlled exoskeletons will stand up from their wheelchair and make the opening kickoff. The technology used to do this springs from a close collaboration between Nicolelis the neuroscientist, and electrical engineer Gordon Cheng.

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A camshaft is a shaft to which a cam is fastened or of which a cam forms an integral part. So how camshaft works? You know about the valves that let the air/fuel mixture into the engine and the exhaust out of the engine. The camshaft uses lobes (called cams) that push against the valves to open them as the camshaft rotates; springs on the valves return them to their closed position which allows air in and exhaust out.
google car in gray colour - Technepal.x10.mx

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Google has now built a completely self-driving car. The Google self-driving car doesn't include a steering wheel or pedals at all. It simply has an on/off switch; a small screen to show you the route, weather, and 2 seats + seat belts. The car has a range of 100 miles on a full charge, according to Google, and is limited to a max speed of 25 mph (40 km/h). It looks nothing like the self-driving cars Google has tested for years, as those were adaptations of conventional vehicles.
Dual Carbon Battery - Technepal.x10.mx

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Modern batteries are not Eco-friendly and they tend to die more quickly than just about any other part of the car. And when they die they must be disposed of carefully to avoid harming the environment. Now, a star-studded Japanese startup called Power Japan Plus (PJP) promises to fix that problem — literally, it promises that this technology will revolutionize the world of battery technology providing longer lifespan, more power, reducing cost and charge times while reducing environmental impacts.
hugh herr wearing bionic ankle - Technepal.x10.mx

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An artificial bionic ankle designed by Hugh Herr, an associate professor of media arts and sciences at MIT Media Lab is made of chips and sensors that work together to adjust ankle stiffness, power, position, and damping thousands of times per second, at two major positions: First, at heel strike, the system controls the ankle’s stiffness to absorb shock and thrust the tibia forward. Then, algorithms generate fluctuating power, depending on terrain, to propel a wearer up and forward.
An image of graphene, showing defects in its single-atom thickness - Technepal.x10.mx

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In recent years, scientists have investigated generating electrical power using nano-structures. In particular, they have looked at generating electricity when ionic fluids—a liquid with charged ions in it—are pushed through a system with a pressure gradient. However, the ability to harvest the generated electricity has been limited because it requires a pressure gradient to drive ionic fluid through a small tube. But scientists have now found that dragging small droplets of salt water on strips of graphene generates electricity without the need for pressure gradients.
Pocket-Sized Wonder-Printer - Technepal.x10.mx

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The folks behind this Mini Mobile Robotic Pocket Sized Printer want to revolutionize the mobile office. Instead of carrying a page-wide device that has to pull paper through it, this little marvel will instead print directly on a piece of paper while it rolls around on top of it. The prototype prints around 1.2 pages per minute at 96 x 112 dpi but the final version will be better, says Zuta Labs. Not bad for a 300g, 10 x 11cm bot.
interference - Technepal.x10.mx

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Superposition is nothing more than addition for waves. Let's say we have two sets of waves that overlap in space and time. At any given point, a trough may line up with a peak, their peaks may line up, or anything in between. Superposition tells us how to add up these waves so that the result reconstructs the patterns that we observe in nature. To do this we need to know some basic facts about the waves: their amplitude, their speed, their wavelength, and a period.
wave nature - Technepal.x10.mx

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Polarization applies to the orientation of the spin of electrons, protons, and neutrons. Polarization describes the spatial relationship between the electromagnetic fields and some fixed orientation. Light can also be linearly polarized. In this case, if we look from side on, we will see a growing and collapsing electric field but, from the top, there is no electric field at all, ever. Interestingly, any orientation of linear polarized light can be described by adding up left and right circular polarized light photons in the appropriate way—known as superposition.