Technology in the classroom

E-readers, smart phones, laptops, Ipads are everywhere, even in the classrooms. Homeworm work computer have class and changed how students to learn and teaching classes, like mobile counterparts. Every year more technology comes into the classroom and for better or worse, it's here to say.

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Source: Onlinecollegesanduniversities

Biological Cybernetics - Transforming Robot Arm into a Formula 1 Simulator

Researchers at the Max Planck Institute for Biological Cybernetics, in Tübingen, Germany, transformed an industrial robot arm into a Formula 1 simulator. To learn more, go to: spectrum.

Cellphone Powered by Coke

Chinese designer Daizi Zheng has created a mobile phone that uses sweet drinks like Coca Cola instead of lithium batteries.

Zheng has been working on this revolutionary device for Finnish cellphone giant Nokia, and claims he has come up with a way of using sugar-based drinks to power mobiles. Any sweet drink, even sugar-sweetened water would be enough to keep the phone running much longer than lithium batteries.

The bio-battery invented by Daizi Zheng generates electricity from carbohydrates, using special enzymes as catalysts. In the process, the device generates oxygen and water. The designer claims his sugar-based bio-battery lasts up to four times longer than a fully charged lithium battery and is much easier to recharge: just pour some more sweet fuel.

Lithium batteries are very expensive and harmful for the environment, so if Zheng’s Coke-powered cellphone turns out to be real, it would be a significant breakthrough.

Death Note War Machine Cosplay

Superherohype forum member Masterle247 has started production of an stunningly realistic War Machine costume to coincide with release of Iron Man 2 (which if you haven’t seen the trailer has been provided for your viewing pleasure after the break.) Consisting of surgically cut pieces of high impact urethane, the suit is held together by over 600 rivets and features wrist rockets, lasers, a minigun, an arc reactor, repulsor gauntlets, light-up eyes, and even an opening and closing faceplate.

Review Google's Nexus One Smart Phone

Google officially launched its Nexus One smartphone today in Mountain View, CA. With just a Google account (i.e. Gmail), you can log in to the Nexus One website and pick one up for yourself unlocked for $529 or $179 with T-Mobile. Not a T-Mobile customer? It's OK, since Verizon and Vodafone are hopping on board later this year.

The Nexus One is packed with a 3.7 AMOLED display, runs Android 2.1 on a 1GHz processor, and comes with some excellent 3D graphics. Shoots MPEG4 video on its 5MP camera that boasts an LED flash for those dimly-lit photo shoots.

The great news is that some of Google's best features come standard on Nexus One: Google Earth, Google Maps (with turn-by-turn directions and voice output), and Google Voice.

•Battery lasts up to 10 hours on 2G, and five hours of 3G Internet surfing
•Stereo Bluetooth
•Compass
•GPS
•Two microphones – one in the front, one in back
•Facebook integration
•Noise cancellation
•Custom news and weather widgets
•Live wallpapers
•Voice commands
•Multicolored notification LED trackball
•Custom engraving available
















Image Source: engadget

Day In The Internet

Lots of interesting facts and numbers about the Internet in one big picture. It’s crazy all what happens in one day in the Internet.








Source: onlineeducation

Competing MTX, Worlds Biggest Subwoofer

Royal Device has on its own developped and built in Italy the biggest subwoofer of the world for an Audio/Video room that can be also considered as the greatest AUDIO ROOM for private music listening of the world. The Royal Device audio room belongs to Roberto - the audio designer who made it.

The audio reproduction is focused on the speakers output capability more than electric power output of the amplifiers with no need of KWatts power supply lines, releasing more than 110 dB/1W/1 meter sensitivity starting from below 10 Hz focused on the listening position.





































































SUBWOOFER horns are built underneath the floor in a cavity of 1 meter deep. Each horn is driven by 8 x 18" (47 cm) woofers. A total of 16 woofers.
Each horn is 9.5 meters long and has a floor mouth area of 2.2 square meters and reproduce starting from 10 Hertz FULL POWER. The real mouth area IS NOT the one on the floor. The real mouth have to be considered together with the side vertical frontal panels. The total horn is calculated onto the listening point considering the side walls and the ceiling loadings. This reduces the floor mouth that is not in open air.

The SUBWOOFER efficiency is 120dB/ 1 Watt/1 meter. So the need of external regulation to adapt to the remaining audio system. The total electrical capability of the 16 x 48 cm woofers is about 400 W peak power per woofer that means about 400 x 16 = 6400 W peak total (practically uselss). Each woofer features a 100 mm coil. The real maximum power fed to both subhorn measured with an oscilloscope at the highest musical peak was 6 watts per channel when a pair of tube amps were used to drive the 16 LAuras, while up to date the electric power can reach 60 watts per channel using the 4 x 50watts/ch BLU EYES amps. In this conditions, peak levels are much higher and undistorted than any live concert at all. Walls and ceiling seems to fall down, but fortunately don't. The sound pressure is concentrated at the listening point and stopped by a 2 meters high woolglass anechoic wall on the back of the listening position. We should remember that the total diaphragm surface of the woofers is 2.89 square meters (8.67 square feet) and with the drivers horn loaded (not direct radiating), distortion at 60 watts is practically negligible. If for instance the real maximum rated power (6400 watt) would be used the pressure level would reach 160 dB, but I wonder who could survive. Not even the house built in steel & concrete maybe would stand up.

SUBWOOFER horns are built underneath the floor in a cavity of 1 meter deep. Each horn is driven by 8 x 18" (47 cm) woofers. A total of 16 woofers.
Each horn is 9.5 meters long and has a floor mouth area of 2.2 square meters and reproduce starting from 10 Hertz FULL POWER. The real mouth area IS NOT the one on the floor. The real mouth have to be considered together with the side vertical frontal panels. The total horn is calculated onto the listening point considering the side walls and the ceiling loadings. This reduces the floor mouth that is not in open air.

Source: royaldevice