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Mobile Phone Battery Dying? Talk Louder!

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ShoutTechnology never ceases to amaze me, and even the most improbable ideas can turn into reality, thanks to some of the most creative minds in this world. In the future, if you are in the middle of nowhere without electricity and your phone’s battery is running out of juice, you might just have to talk louder to power up your gadget.

I kid you not – this is the technique that has been developed by some electrical engineers in South Korea. The idea is simple – sound waves being converted into electricity. The brainchild of Dr. Sang-Woo Kim of the Institute of Nanotechnology at the Sungkyunkwan University in Seoul, South Korea, this technique holds a lot of promise for the average person today.

Not only can using the phone to make a call help to charge the battery, but the background noise can also be used to power up the device. Before you get too excited, you have to understand that there are limitations to the technology. For one, the power that can be derived from the sound waves may not be enough to charge the battery to its full capacity. However, if the technology works properly, the sound waves may at least be able to allow the device to keep on functioning until a proper outlet can be accessed. Even better, this technology can be applied to gadgets other than mobile phones. Think netbooks and laptops.

Here’s the science behind the idea: set up two electrodes with strands of zinc oxide in between. Attach a sound absorbing pad. When this pad vibrates, the zinc oxide strands move as well, the result of which is an electrical current. That is, of course, simplifying things, but the concept alone is enough to evoke some excitement as to its potential!

Via Crazy Engineers

All Along the Watchtower Jazz Cover

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Time for a dose of Battlestar Galactica – well, sort of. We may not watch the entire BSG series every year, but enthusiasts will definitely get their hands on anything related to BSG on a regular basis. This month, what I stumbled upon is a jazzy rendition of Bear McCreary’s All Along the Watchtower.

I do not know a single person who has watched BSG who was not affected by that haunting piece by McCreary, and to be honest, I think that it’s still the best version. The Sac State Jazz Singers did a pretty good job, though, especially given the fact that there were no instruments involved. Oh, and they got a comment from McCreary himself!

Wow, guys… this is seriously awesome. Someone sent this link along, and I’m pretty much stunned listening to this. What a killer arrangement! I think I might like it better than mine. 🙂 Keep up the good work. So say we all…

-Bear
bearmccreary

That’s the best praise these guys can get. Without further ado, here is the video. Enjoy those BSG scenes in your head as you listen!

Computers “Given” Schizophrenia

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Robot
First they give computers a sense of humor – something that is totally cool, I think. Now they give them a mental disorder, specifically schizophrenia. We sometimes use the word loosely to make fun of people close to us who may exhibit erratic behavior, but schizophrenia is nothing to joke about. Especially when it comes to computers who might one day take over the human race.

All joking aside, researchers have turned to computers to try to gain more insight into the mind of a schizophrenic human. Some researchers at The University of Texas at Austin and Yale University have set up a neural network model ((Via: LabSpaces)) to represent the brain and tweaked things so that it simulated conditions wherein excessive levels of dopamine are present. Dopamine is a neurotransmitter which is present in large amounts in the brain of a schizophrenic.

So what did they find out? The neural network model showed that what the dopamine does is to mess with the brain’s ability to remember and forget things. So being schizophrenic is all about not being able to properly forget or ignore things. The result is that people who suffer from schizophrenia make connections that are not present or not real, hence the hallucinations and paranoia.

On the technical side, the creation of this neural network model is a big feat, which can make way for more studies in the future. However, my worrywart nature cannot help but assert itself. What if this computer schizophrenic state becomes the ground for “complications” in human-computer interaction in the future? Call me paranoid, but once artificial intelligence becomes full-blown, you never know. 😉

Image via Chris Devers

Get Your Own Strandbeest Via 3D Printing

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strandbeest3d
Remember those awesome “beasts” that were introduced to the world by Dutch kinetic artist Theo Jansen? They are called strandbeests, and they are made of every day materials such as water bottles, rods, plastic tubes, and rubber rings. The amazing thing about these creations is that they are self-propelling. Given the size of a strandbeest, seeing one in action is probably one of the most amazing sights ever.

Now, the average person will probably not have the opportunity to build or see one of these in real life. It’s a pity, especially since the amount of work and effort put into a single strandbeest is impressive. But what if there was a way to have your very own strandbeest? Not life sized, but something that can join your already huge toy collection.

With 3D printing, this is actually possible! I was quite a skeptic in the beginning with regard to 3D printing and its use, but the more I read about its applications, the more I am convinced about the whole concept.

Now Theo Jansen himself has shared his mini-strandbeest created using 3D printing! It really is fascinating, especially since the creature works just like its big brothers. Here’s the artist showing how it’s done.

http://youtu.be/nt8oHv09e_k

I have to admit – it looks like a tiresome process; but then again, I bet the original beasts were just as bothersome, if not more. You also have to think that in order to make something that is worthy of a permanent place in science fiction (as the strandbeests are), you have to go the extra mile. Now 3D printer manufacturers – make them so ordinary people can get hold of these devices!

Duct Tape Wave Machine

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What do you do when you have a lot of spare time, a lot of duct tape, some shish kabob skewers, and rubber stoppers for Erlenmeyer flasks? ((Refresh your memory: an Erlenmeyer flask is a piece of equipment used in the lab. It is characterized by a flat bottom, a conical body, and a cylindrical neck.)) Well, if you’re YouTube user RDSQC, you will make your own wave machine, take a video of it in action, and upload it for the entire world to see!

As you can see, this is not the wave machine that you use to make waves in pool to simulate the ocean’s movement. (Duh.) If I am right, this is actually a DIY version of a Shive wave machine, which was named after Dr. John Shive. He developed the machine back in the 1950s when he was working at Bell Labs.

So what’s the point in having a machine like this? (Aside from the fact that the guys look like they were having fun making the machine move.)

The purpose of a Shive wave machine is supposed to demonstrate how slow transverse waves move. In order to make this machine, the rods (shish kabob sticks in this case) have to be placed at regular intervals. In conventional wave machines, the rods are attached to a wire spine. In a MacGyver-worthy move, this DIY-er decided to use duct tape.

I don’t know what practical use the average person will ever have for one of these machines, but RDSQC, MacGyver would be so proud of you! ((Source: RDSQC))

Now if you happen to adore physics, you can see videos of “real” wave machines here.

FIRST Robotics Competition: This Is the Real Thing

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Recently, the FIRST Robotics Competition was held at the Boston University. FIRST stands for “For Inspiration and Recognition of Science and Technology” and was conceptualized by no less than Dean Kamen. If the name is unfamiliar, think of the Segway Human Transporter. Does that ring a bell?

This competition covers four annual contests open to all grade levels in the United States: Junior LEGO League (ages 6 to 9), LEGO League (ages 9 to 12), and Tech Challenge (high school students). The main thing going for FIRST, though, is the Robotics Competition, which has gathered 12,000 students who are probably real geeks. Not the hipsters who seem to take pride in labeling themselves as geeks.

In the recently concluded FIRST Robotics Competition, teenagers are tasked with creating robots that are supposed to perform specific tasks. At the same time, the robots need to be able to defend against other robots so that the assigned tasks can be completed.

While the whole idea seems fun – and indeed, the contestants find it fun – there is a lot of hard work involved. The contestants actually get a kit at the start of the school year so that they have several months to work on their project. The ultimate test comes when they all get together to pit their robots against one another.

Here’s a sampling of what went on at the competition.

12,000 kids screaming and not for Justin Bieber. Any parent can be proud to have his/her kid in that crowd. I know I would.

Via PopSci