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Hardware Hacking

Grad Student Invents Cheap Laser Cutter 137

An anonymous reader writes "Peter Jansen, a PhD student and member of the RepRap community, has constructed a working prototype of an inexpensive table-top laser cutter built out of old CD/DVD drives as an offshoot of his efforts to design an under $200 open-source Selective Laser Sintering (SLS) 3D printer. Where traditional laser cutters use powerful, fixed-focus beams, this new technique dynamically adjusts the focal point of the laser using a reciprocating motion similar to a reciprocating saw, allowing a far less powerful and inexpensive laser diode to be used. The technique is currently limited to cutting black materials to a depth of only a few millimeters, but should still be useful and enabling for Makers and other crafters. The end-goal is to create a hybrid inexpensive 3D printer that can be easily reconfigured for 2D laser cutting, providing powerful making tools to the desktop."
Crime

Mom Arrested After Son Makes Dry Ice "Bombs" 571

formfeed writes "Police were called to a house in Omaha where a 14-year-old made some 'dry ice bombs' (dry ice in soda bottles). Since his mom knew about it, she is now facing felony charges for child endangment and possession of a destructive device. From the article: 'Assistant Douglas County Attorney Eric Wells said the boy admitted to making the bomb and that his mother knew he was doing so. The boy was set to appear Tuesday afternoon in juvenile court, accused of possessing a destructive device.'" She's lucky they didn't find the baking soda volcano in the basement.
Image

Australian Women Fight Over "Geekgirl" Trademark 187

bennyboy64 writes "Two prominent women in the Australian IT industry are in a bitter dispute over the ownership of the trademark 'geekgirl.' A woman attempting to use 'geekgirl' on Twitter told ZDNet that women had been advised by the trademark owner to stop doing so since she owned the trademark for the word. 'She noted her trademark and asked me to stop calling myself a "geekgirl" in general conversation and to cease using the hashtag "#geekgirl" on Twitter,' IT consultant Kate Carruthers said."

Comment I have this discussion all the time at work... (Score 1) 712

We talk about this at work all the time. A lot of people would agree with the article, but that position really comes from a certain degree of ignorance. Think about this: What would someone from the 1920's think if they were transported immediately to the present and saw you using your cell phone? They'd probably think, "wow, that's a phone that doesn't need wires... and it's really small". They would recognize it as a means of long distance communication very similar IN FUNCTION to the telephones they were familiar with. In fact it is a radically different device relying on completely different types of technology than the telephones of the 1920's with which our time traveler is familiar. Most of the technology that allows that very familiar device to operate didn't exist in the 20's. To the lay person a telephone is a telephone, but to a scientist or an engineer there are vast differences between seemingly similar items. What would a person from Victorian England say when they saw a maglev train? How about "wow that's a crazy fast locomotive... where's the smoke and steam?" Other than shape and function a steam locomotive and a maglev train have very little in common. They are based on vastly different technology and speak to our continuous pace of technological advancement. Sure going from using a horse to using a horseless carriage seems like a big technological leap, but going from a bi-plane to a stealth fighter involves many more significant technological and scientific advances. Yet to a lay person the two items are clearly related and the advancement is all "under the hood".

The fact of the matter is that the human body can only do so many things and so the technology that assists us to do those things is going to look more or less the same, no matter how advanced it is. There are technological advancements that allow us to do those same things in new ways, and it is those that make it look like a major leap. For example telegraph communication existed for quite some time, but it seemed miraculous when the first trans-Atlantic cable was installed. It was heralded as a technological triumph of the ages, and in fact it radically altered (advanced) the way the world operated, but technologically speaking, it wasn't that big a leap. Sure the effort of making the cable and stringing it across the Atlantic was epic in size, but the technology was not a giant leap forward. There were problems with the first cable and it soon stopped working. Good science and engineering resulted in a clever solution, but again it wasn't like the discovery of fire. To the world though, it seemed like a really big deal, the guy who goofed up on the first system had mud on his face and the guy who came up with the solution was hailed as a genius. It changed the world, but it just wasn't that big a leap.

One day soon we'll probably be able to communicate neural implant to neural implant, this will be a huge technological leap, and it may be heralded as a giant leap forward. But it may also be seen as a really small cell phone installed in your head... ho hum. It's not that technology has stopped advancing at a frightening pace, it's that we've grown so accustomed to it.

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