Power supplies and sources
Circuts and Logic
The image above shows two animated characters in what’s been certified by the Guinness Book of World Records as the smallest movie ever made. It’s called “A Boy And His Atom,” and the medium of animation is, you guessed it, atoms. It lasts all of 60 seconds, and depicts a boy — made up of individual atoms himself — encountering a single atom that he befriends and throws like a ball.
The memristor ( pron.: / ˈ m ɛ m r ɨ s t ər / ; a portmanteau of "memory resistor") was originally envisioned in 1971 by circuit theorist Leon Chua as a missing non-linear passive two-terminal electrical component relating electric charge and magnetic flux linkage. [ 1 ] Leon Chua has more recently said that the memristor definition could be generalized to cover all forms of 2-terminal non-volatile memory devices based on resistance switching effects [ 2 ] and Chua has said that the memristor is the oldest known circuit element with its effects predating the resistor , capacitor and inductor . [ 3 ] The memristor is currently under development by various teams including Hewlett-Packard , SK Hynix , and HRL Laboratories .
<img src="http://timenerdworld.files.wordpress.com/2012/04/michio-kaku-moores-law.jpg?w=480&h=320&crop=1" alt="michio-kaku-moores-law" title="michio-kaku-moores-law"/> Moore’s Law is finally breaking down, according to theoretical physicist Michio Kaku . He’s talking about the so-called law that says the number of transistors that can be fit on a computer chip will double every two years, resulting in periodic increases in computing power.
This is the kind of thing that most men would love to construct, and most absolutely shouldn't. No good can come from having something like this. What can you use it for? When could you even test it? Even if you keep it for home invasion, and you were unlucky enough to actually use it- even if the invader didn't shoot you or overpower you and stick this up your butt, once you use it on someone and the word gets out, every aspiring home invader in your area is going to see it as a challenge, or just another really cool thing in your house they'd want to steal.
Illusion cloaks that make one object look like another are a fascinating type of invisibility device. The general idea is that such a device would make an apple look like a banana or a fighter plane look like an airliner. Clearly this would have important applications. But while materials scientists have made great strides in building ordinary invisibility cloaks that work in the microwave, infrared and optical parts of the spectrum, making illusion cloaks is much harder. That’s because the bespoke materials they rely on require manufacturing techniques that seem like a distant dream. Today, Tie Jun Cui and buddies at Southeast University in Nanjing, China, say they’ve designed and built a practical alternative to illusion cloaks, which they call a “ghost cloak”.
With the rapid progression of technology each year, it's easy to accumulate a pile of obsolete gadgets that you just can't bear to get rid of. So don't! Here are our top 10 ways you can take the retired gadgets you've already got and turn them into something that has a solid place in the future. 10. Turn an Old Mobile Device into a Dedicated VOIP Handset We've seen how easy it is to turn an iPod touch into an iPhone using a few tricks and some sort of VOIP service, and it's just as easy with an old phone—so long as you have a constant Wi-Fi connection.
MaKey MaKey is an invention kit for the 21st century . Turn everyday objects into touchpads and combine them with the internet. It's a simple Invention Kit for Beginners and Experts doing art, engineering, and everything inbetween: