Carlo Longino is an expert at the Insight Community. To get insight and analysis from Carlo Longino and other experts on challenges your company faces, click here.
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Here's day two of Jeri Ellsworth's, aka Circuit Girl, video lab journal, Short Circuit. In this one, she discusses frequency multiplication with tank circuits.
More:
Jeri Ellsworth and Short Circuit #1
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My Institute for the Future colleague Lyn Jeffery, of the virtual China blog 88 Bar, turned me on to Neocha.com, an incredible hub of indie Chinese art/culture/music. For example, dig the beautiful music of experimental zither player Zeng Xiaogang.
When I was in 10th grade and heading off for a fun time visiting my sister at college, my friend rolled the Dodge Omni 3 1/2 times while driving me to the bus station. My February vacation turned out to be an adventure of a different, more medical sort.
That Omni will never get the love and attention that Morris Rosenthal's cherished ride is experiencing.
I've owned the Omni for 22 years, and I'm not going to give it up without a fight. My real goal is to build an electric car one day, or at least do a conversion, but the chassis has to be reliable first:-) But I'm not a restoration guy who's going to strip it to the metal, sandblast, and basically restore it to new. All I aspire to is safe and effective. So what does the Omni need? For starters, some serious unibody repairs. Last time I had the left front wheel off I peeled away a pound or two of rusted, jagged sheet metal from one of the formed structural members.
He goes on to tell the story of repairing the Omni with pictures, text and video. It is an archive of his process with his project. Electric car conversion? Sounds like a great idea, and this might be a good candidate body style.
The most important electrical connection in your car, if there is such a thing, is the ground. The ground is the heavy cable, normally color coded black, that attaches to the negative terminal of the battery. Anytime you are doing car work that involves electrical components, you should disconnect the ground cable from the battery first. With the ground removed, there is no way an electrical circuit can be completed by accident.
In the late 70s and early 80s, American automakers slimmed their cars down to meet demand for lighter, more fuel efficient vehicles in response to the previous oil crisis. Those cars fell out of favor as the price of oil stabilized at a low level for years. In today's environmental and energy conscious times, we could see a resurgence of interest in the old econoboxes. In some parts of the US, cars can last a very long time, in other parts, they rust out pretty quickly. Not everybody appreciated these small older cars, but there were some interesting designs and projects.
This collection of pages make up a good illustration of how to do car repairs on an old vehicle. The videos are short and to the point, and of decent quality. His text tells the story well and helps the reader understand the ideas and issues at hand.
Originally, I found this project while searching for a way to get into a Dell Profile 3 to harvest the hard drive, which apparently nobody has ever written about online. What I did find, however was another of Morris' sites with some cool flow charts of computer repair. More on that at another time....
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This is not a parody of a workplace safety video. This is an actual workplace safety video. Will You Be Here Tomorrow? (Thanks, John Walsh!)
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Here's a fascinating video demo of Dasher, a single finger interface that allows you to enter text without a keyboard. Single-finger input without a keyboard? Wait, that's my iPhone.
Keyboards are inefficient for two reasons: they do not exploit the redundancy in normal ... all » language; and they waste the fine analogue capabilities of the user's motor system (fingers and eyes, for example). I describe a system intended to rectify both these inefficiencies. Dasher is a text-entry system in which a language model plays an integral role, and it's driven by continuous gestures. Users can achieve single-finger writing speeds of 35 words per minute and hands-free writing speeds of 25 words per minute. Dasher is free software, and it works in all languages, and on many platforms. Dasher is part of Debian, and there's even a little java version for your web-browser.Read more | Permalink | Comments | Read more articles in Computers | Digg this!
Here's a fascinating video demo of Dasher, a single finger interface that allows you to enter text without a keyboard. Single-finger input without a keyboard? Wait, that's my iPhone.
Keyboards are inefficient for two reasons: they do not exploit the redundancy in normal ... all » language; and they waste the fine analogue capabilities of the user's motor system (fingers and eyes, for example). I describe a system intended to rectify both these inefficiencies. Dasher is a text-entry system in which a language model plays an integral role, and it's driven by continuous gestures. Users can achieve single-finger writing speeds of 35 words per minute and hands-free writing speeds of 25 words per minute. Dasher is free software, and it works in all languages, and on many platforms. Dasher is part of Debian, and there's even a little java version for your web-browser.Read more | Permalink | Comments | Read more articles in Computers | Digg this!
Because of the large and comprehensive repertoire GEMA manages, at performances of national and international dance and entertainment music there is an actual assumption militating in favour of the existence of a liability fee.Oh, and lest we forget, it appears that even if you do fill out GEMA's own forms listing out all the non-GEMA music you played, you have to pay GEMA to file the forms. So... you end up paying no matter what.
About a month ago, Mike Arrington ran an article at TechCrunch about a deal we did at UserLand in 2002 with Adam Curry, to include his RSS feed in the set of default feeds for Radio 8.0.
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Why did lightinthebox.com remove this photo of a prom dress and replace it with a different shot of the same model in the same dress?
Public Radio International/WNYC Radio's The Takeaway has just produced a video offering a glimpse inside of NYC Resistor. Watch as they hack a sack o' busted iPods and print out giant red grasshopper butterfly hybrids (no, really).
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Instructions:
1. Stare at the image for 10 seconds.
2. Look at something -- your hand, a book, your friend
3. Enjoy!
Download the MP4 here. Flash video above, click "fullscreen" icon inside player to view large. YouTube channel here, subscribe on iTunes here. Get Twitter updates every time there's a new ep by following @boingboingvideo, and here are blog post archives for Boing Boing Video.
Boing Boing Video wishes you a Happy Friday. And surely there can be no better way to celebrate the end of a work week than to put on a Katamari Damacy head, crank up a favorite song ("Bodysnatchers" by Radiohead), and rock out in front of a webcam. This is what happened with our esteemed interview guests Peter Kirn of Create Digital Music and Matt Ganucheau of Expression College, who participated in Boing Boing/offworld's marathon live coverage of the 2009 Game Developers Conference. The interview was over, the chat room was buzzing, the Katamari costumes were just sitting there. I asked our chat room participants what we should force our guests to dance to, and all agreed to Radiohead. You'll hear me shouting out commands from the chat room during this video, and eventually, at the end, obeying a final command myself: to join in.
This moment is also memorialized by paperdummy, whom we thank for the kind loan of the Katamari heads.
Previously:
* Music in Video Games, pt. 2, with Peter Kirn and Matt Ganucheau
* Music in Video Games, a conversation with Peter Kirn and Matt Ganucheau
*
Social Games, and The Quest for Virtual Poo.
* Doctor Popular's Awesome Yo-Yo Stylings
* Hideo Kojima on Metal Gear Solid Touch (games)
* Jane McGonigal on Emotion, Gaming, and Dance.
* Jane McGonigal - Games Can Change the World.
* Jane McGonigal's Game Developers' Conference talk on Making Your Own Reality
* BBV @ GDC live stream archives, at Ustream.tv
* Boing Boing Video and Offworld.com Live at GDC09: offworld.com archive
* Boing Boing Video and Offworld.com Live at GDC09: boingboing.net archive
[ Special thanks to Joel Johnson for editorial help on this episode! BBV Live @GDC09 credits and thanks: Production Team -- Jolon Bankey, Derek Bledsoe, Daniela Calderon, Eddie Codel, Xeni Jardin, Allison Kingsley, Matty Kirsch, Alice Taylor, Wesly Varghese. Special thanks to Wayneco Heavy Industries (accommodation and studio facilities), Virgin America Airlines (air travel), Celsius (thermogenic energy beverage), Ustream.tv (streaming video host). Moral support, production assistance, additional talent, and good vibes provided by: Domini Anne, Scott Beale, T.Bias, Jeremy Bornstein, Brandon Boyer, Chris The Van Guy, Peter S. Conrad, Marque Cornblatt, Wayne, Bre, and the entire de Geere family, Marcy DeLuce, Cory Doctorow, Joel Johnson, Kourosh Karimkhany, Jim Louderback and the Revision 3 team, Karen Marcelo, Rocky Mullin, Alicia Pollak, Jackie Mogol, Taylor Peck, David Pescovitz, Micah Schaffer, and Teal. ]
Beautiful film from Semiconductor.
Here we see the HI (Heliospheric Imager) visual data as it tracks interplanetary space for solar wind and CME's (coronal mass ejections) heading towards Earth. Data courtesy of courtesy of the Heliospheric Imager on the NASA STEREO mission.(via cgr)Working with STEREO scientists, Semiconductor collected all the HI image data to date, revealing the journey of the satellites from their initial orientation, to their current tracing of the Earth’s orbit around the Sun. Solar wind, CME's, passing planets and comets orbiting the sun can be seen as background stars and the milky way pass by.
As in Semiconductors previous work 'Brilliant Noise' which looked into the sun, they work with raw scientific satellite data which has not yet been cleaned and processed for public consumption. By embracing the artifacts, calibration and phenomena of the capturing process we are reminded of the presence of the human observer who endeavors to extend our perceptions and knowledge through technological innovation.
Download the MP4 here. Flash video above, click "fullscreen" icon inside player to view large. YouTube channel here, subscribe on iTunes here. Get Twitter updates every time there's a new ep by following @boingboingvideo, and here are blog post archives for Boing Boing Video.
Today's Boing Boing Video episode is part 2 of a 2-part conversation with Peter Kirn of Create Digital Music and Matt Ganucheau of Expression College about generative music, experimental audio in video games, new tools for music composition, and how sound changes our experience of gaming.
We conducted this interview during Boing Boing/offworld's marathon live coverage of the 2009 Game Developers Conference. Peter Kirn shares a couple of urls that came up during the conversation:
Composer Troels Folmann came up as a source of inspiration - and himself the advocate of something he calls "micro-scoring." His GDC session, in which he boils a waterphone (seen at the tail end of the video!), is here on createdigitalmusic.com.And here is a previous interview in which he discusses his approach to adaptive music.
Previously:
* Music in Video Games, a conversation with Peter Kirn and Matt Ganucheau
*
Social Games, and The Quest for Virtual Poo.
* Doctor Popular's Awesome Yo-Yo Stylings
* Hideo Kojima on Metal Gear Solid Touch (games)
* Jane McGonigal on Emotion, Gaming, and Dance.
* Jane McGonigal - Games Can Change the World.
* Jane McGonigal's Game Developers' Conference talk on Making Your Own Reality
* BBV @ GDC live stream archives, at Ustream.tv
* Boing Boing Video and Offworld.com Live at GDC09: offworld.com archive
* Boing Boing Video and Offworld.com Live at GDC09: boingboing.net archive
[ Special thanks to Joel Johnson for editorial help on this episode! BBV Live @GDC09 credits and thanks: Production Team -- Jolon Bankey, Derek Bledsoe, Daniela Calderon, Eddie Codel, Xeni Jardin, Allison Kingsley, Matty Kirsch, Alice Taylor, Wesly Varghese. Special thanks to Wayneco Heavy Industries (accommodation and studio facilities), Virgin America Airlines (air travel), Celsius (thermogenic energy beverage), Ustream.tv (streaming video host). Moral support, production assistance, additional talent, and good vibes provided by: Domini Anne, Scott Beale, T.Bias, Jeremy Bornstein, Brandon Boyer, Chris The Van Guy, Peter S. Conrad, Marque Cornblatt, Wayne, Bre, and the entire de Geere family, Marcy DeLuce, Cory Doctorow, Joel Johnson, Kourosh Karimkhany, Jim Louderback and the Revision 3 team, Karen Marcelo, Rocky Mullin, Alicia Pollak, Jackie Mogol, Taylor Peck, David Pescovitz, Micah Schaffer, and Teal. ]
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It is "the first case known to doctors of a person being able to feel, see and deliberately move a limb that doesn't exist." The woman underwent an MRI and when doctors asker her to move her imaginary third limb, her brain responded as if she really had the arm. Her visual cortex activity also indicated that she saw the arm. (Via Arbroath)
Artist, actress, and digital explorer Ann Magnuson has an art show opening up tomorrow night in the remote California desert town of Joshua Tree. The exhibition is titled "30 x 30," at Art Queen gallery, and chronicles Magnuson's adventures in creating 30 art works in 30 days. From the gallery owner's official blurb:
Ann Magnuson is an actress ("Making Mr. Right", "Clear and Present Danger", "Panic Room", series regular on the ABC-TV sitcom "Anything but Love"), writer, performance artist, former singer/lyricist for the psycho-psychedelic band Bongwater and a part-time resident of Joshua Tree. "I've been visiting JT regularly since the eighties" Ann told us. "My husband and I finally got a place out here 5 years ago and I love it." She loved our '30 in 30' exercise. "Making art is more fun than acting!" she told us. "The anything-goes approach gave me a sense of liberation I haven't felt since I was a kid. It's really helped me look at the creative process anew."More on the show here, and Black Book reviews another show she's in right here.Although Ann had always enjoyed making craft projects or fake Jean Michel Basquiat paintings (which are fantastic!) she had never applied her talents to putting together a whole show of her artworks. Ann used materials from local thrift stores as well as organic and inorganic 'found objects' from her rustic desert environment in Joshua Tree. Please join us this Saturday, April 11, 7-10 pm for the opening party with live entertainment by the Plaids, Shari Elf, and maybe even Ann Magnuson!
VIDEO: Ms. Magnuson is shown above in a video from 1983, a segment called "Girl Talk" from the Manhattan cable access television show "Your Program of Programs." She's a legend, and we love her.
IMAGE: Below, "Prince Charming is an Asshole," by Ann Magnuson, from the Joshua Tree show opening tomorrow night.
Crafter Becky Stern says: "To go along with my Vicodin earrings, I made this Vicodin ring from sterling silver. I sanded one side of the pill flat (while wearing a dusk mask, of course!), and bezel set it.
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The Mayor of Mt. Holly posted this terrific movie about World War I starring dogs, "All Quiet on the Canine Front." Here's a bit of information about the Dogville Shorts series (1921-1931). (Wot, no Wikipedia entry?)
¡Ay, caramba! On May 7th the US Postal Service will be releasing a series of postage stamps commemorating The Simpsons. As part of the pre-release preview you can vote on your favorite Simpsons character and pre-order sets of the stamps.Sneak peek at the images over at Laughing Squid. (Congrats, Boing Boing pals Matt Groening + David Silverman!)
bjork (above. seriously. this is. classic.)
salvador dali
on the set
as seen on tv
24: the 1994 pilot
pancake mountain
television obscurities
video home system
ernie kovacs show closing credits
Permalink for this edition. Web Zen is created and curated by Frank Davis, and re-posted here on Boing Boing with his kind permission. Web Zen Home and Archives, Store (Thanks Frank!)
"We don’t want to give consumers more to think about. We think [broadband] is a pretty powerful drug and we want people to consume more of it."While Cablevision has had its fair share of questionable practices over the years, one thing you have to admit, is that it's always been much better than a lot of other cable companies on these sorts of issues -- and often goes against what the other big cable companies do. Unlike Time Warner Cable, which caved to Hollywood about running a remote DVR service, Cablevision stood up for its rights and won (so far). The company also has gone against the grain in suggesting a la carte cable channels isn't such a bad idea. Plus, the company offered one of the first truly high speed broadband offerings, and then combined it with cheap or free additional services that helped build marketshare, rather than following the other cable companies in trying to offer every new service at a high price. And, now, it seems like it's taking the customer-centric approach to metered broadband as well (unlike Time Warner Cable, which just claims it is).
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Instructables user Kimberly8705 writes:
Read more | Permalink | Comments | Read more articles in Instructables | Digg this!Mid-drive power wheel chairs (PWC) have become more popular in recent years. However, due to the placement of the front casters, the traditional side-mounted footrests have been replaced by a single center-mounted footrest. Unfortunately, center-mounted footrests do not have a lift/lower mechanism that is easily operable by certain PWC users who transfer independently. Many PWC users have limited trunk strength and range of motion, decreased sensitivity in their lower body, and lack of fine motor function. This causes difficulty reaching the footrest to raise it. There is a need for a design solution that allows PWC users to independently lift and lower the footrest.
Anna Brones of Wend magazine has an article about business that use bikes to deliver goods and provide services. One company profiled, Soupcycle, delivers organic soup. Another Q19, is a house cleaning service that uses petrochemical-free cleaning agents. The article also mentions bike-powered business in Florida (organic produce delivery), Boston (pick-up and delivery service), and Philadelphia (recycling and compost).
Lazar delivers soup to “Souplandistan,” an area that covers most of inner Portland, with an electrical assist trike. The battery assist helps pull him and his bike and trailer up some of Portland’s hillier streets. Fully loaded the trailer and bike weigh a total of about 200 pounds, but Lazar calculates that he only uses the battery assist about 20% of the time; for the rest, it’s all legs.Pedaling to Profit: The Upswing of Bike Powered Business
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Carlo Longino is an expert at the Insight Community. To get insight and analysis from Carlo Longino and other experts on challenges your company faces, click here.


Here's a Atmel ATtiny13 driving a 10x8 LED matrix inside of a decorated sytrofoam Easter egg. Holiday maker fun for the whole family! Even Hello Kitty got in on the fun.
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From the MAKE Flickr pool
Barrie Sutcliffe's installation titled The Small Within the Great consists of wall mounted strings played via data derived from the quantum decay of radioactive metals -
Experimental stage running brushed DC motors controlled via PWM amplifiers connected to an Arduino. Data is fed to the computer from an Aware radiation monitor that is looking at Americium 241. Speed of motors is controlled by this data, the time at which they change is a short constant to keep things as level as possible.See more of the project in his Flickr set.
All strings are the same gauge, therefore when tuned via equal temperament only string length changes. This explains the ginormous, 7-meter long G1 on the top, which was so big that it really only gave off weird noisy overtones instead.
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Masters of the Tesla coil ArcAttack recreate the theme from Doctor Who in their medium of choice - complete with Faraday suited 'conductor'. Delia would be proud. [via Synthtopia]
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Are you telling the truth? This fun and easy to build kit uses the galvanic skin response to become your very own personal lie detector.
In the Maker Shed:
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More about the Truth Wristband Kit
To download The Truth Wristband MP4 click here or subscribe in iTunes.
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From Southern University of Denmark's Robot Laboratory comes this lawn mower bot, controlled by a Bluetooth connection to a Wiimote.
Welcome to the CASMOBOT website!
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The Electric Peasant's Banjo Processor takes the traditional instrument to sonic realms few have dared before, using a pitch-to-voltage converter along with a collection of bonus features - When The Peasant built the SynthCase project, a keyboard was not included, as playing one is not something that he has ever learned to do. However, The Peasant is a banjo player, and so thought that it would be very interesting to use a banjo to control the analogue synthesizer. A number of years ago a pitch-to-voltage convertor circuit board, designed for guitar use, was purchased from fellow DIY enthusiast Harry Bissell. This pcb only used the bottom three guitar strings to extract the CV output, and so it was decided to expand the board to work with all five strings on the banjo. The board was designed to output CV, envelope, and triggers, and also included a built-in bass synthesizer. A special hex pickup was required to deliver individual string outputs to the circuitry.
During the design phase, "feature creep" reared it's ugly head, and the final project ended up including a preamp/mixer section, using the hex pickup and an input for a regular banjo pickup. Some extra functions were added to the bass synth, and some quasi sawtooth outputs were added courtesy of another small pcb from Mr. Bissell.The pitch converter alone could prove much fun for guitar players. And as you might imagine the aforementioned SynthCase project is an impressive sight to see. Check out the Banjo Processor's jumbo pictorial over at EP's site. [via Deviant Synth]
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Man-o-man, what an inspiring collection of custom-fabbed hi-fi audio equipment and instrument amps to be found at Electron Luv, the home of metal fabricator, audio engineer, and tube-head Josh Stippitch. If this stuff sounds half as good as it looks...
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Get a jump on your Halloween plans this year with the Special Effects Master Class DVDs from the Maker Shed. Each DVD is 3 hours long and packed with lessons taught by professional artists, most of whom work in Hollywood at effects houses including Stan Winston Studio, Spectral Motion, KNB and Motion Picture F/X, and teach part-time at Los Angeles-area effects schools like Westmore Academy, Makeup Designory, FX School and USC.
More about our Special Effects Master Class DVDs
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Good going Trident! There's 130 Herbert megafans who won't be so quick to enjoy, proselytize and spread your client's work next time. Keep it up and you'll soon have the whole world turned off Dune!
Among the smaller of these is a group dedicated to Dune, the classic Frank Herbert sci-fi franchise of novels, movies, and other IP. Their leader, Vooper Werribee, counts 130 members who enjoy roleplay in the sands of an Arrakis based in Second Life, taking on the personae of sandworm-riding Fremen, Harkonnen-hating Atreides, and so on. (He believes only 20% of these are currently active.)Notwithstanding those paltry numbers, last weekend Werribee and other members received legal notices from Linden Lab via Trident Media Group, a New York literary agency which maintains the Herbert Estate. "In particular," the notice reads, "Trident Media Group has complained about your use of characters, concepts and other material associated with 'Dune' in the Second Life environment." Those include roleplay locations entitled "Sardaukar Mask", "Fremen Domain", and "Bene Gesserit Retreat". The Lindens' notice ordered Werribee and his group to remove such titles and objects from Second Life within two days, or the company would do so itself.
Enforcers of Dune: Frank Herbert Estate Targets Dune Roleplayers In Second Life
(Thanks, Mitch!)
About five years ago, Mark Ganter, a UW mechanical engineering professor and longtime practitioner of 3-D printing, became frustrated with the high cost of commercial materials and began experimenting with his own formulas. He and his students gradually developed a home-brew approach, replacing a proprietary mix with artists' ceramic powder blended with sugar and maltodextrin, a nutritional supplement. The results are printed in a recent issue of Ceramics Monthly. Co-authors are Duane Storti, UW associate professor of mechanical engineering, and Ben Utela, a former UW doctoral student.3-D Printing Hits Rock-bottom Prices With Homemade Ceramics Mix"Normally these supplies cost $30 to $50 a pound. Our materials cost less than a dollar a pound," said Ganter. He said he wants to distribute the free recipes in order to democratize 3-D printing and expand the range of printable objects.
Glitzy three-dimensional printers have become common in the industrial world, churning out fast 3-D prototypes of everything from airplane parts to running shoes. But the machines also are becoming popular among artists, hobbyists and educational institutions.
Yet, once one probes the heirs assumption, one finds it lacks any historical or theoretical basis. Instead, the assumption hides rent-seeking behavior, clashes between authors and publishers regarding who can extract that rent, and political maneuvering by the copyright industry; all of which are behaviors that copyright policy ought to avoid and/or prevent. In addition, the image of stealing food from heirs permits the debates to marginalize society's interest in a robust creative system with lower costs regarding the access to and use of knowledge and information.In fact, Desai can find no support for the idea that heirs deserve the copyright of others. He does find it acceptable that copyright should last throughout an author's life, but should end upon death. I have trouble supporting the idea that copyright should even be that long, but the total dismantling of any support for the idea that heirs deserve copyrights is well worth reading. He points out that the whole point of copyright law is to encourage the production of new works -- and once someone is dead, they're not going to produce any new works, so it's silly to continue to "encourage" them.
I would like to draw particular attention to the career of Walter Donaldson.... If the present copyright law had been in effect in the 1920's, all of Walter Donaldson's compositions would fall into the public domain within the next 2 years.The implication,there, is that somehow this is a bad thing. Of course, reality is exactly the opposite. The deal with the public is that creators are given a monopoly for a limited time, so that it eventually goes into the public domain where everyone can benefit from it. Yet Hatch is implying that it's somehow a problem that the public would benefit from Donaldson's works.
My copyrights produce to me annually a good deal more money than I have any use for. But those children of mine have use for that. I can take care of myself as long as I live. I know half a dozen trades, and I can invent a half a dozen more. I can get along. But I like the fifty years' extension, because that benefits my two daughters, who are not as competent to earn a living as I am, because I have carefully raised them as young ladies, who don't know anything and can't do anything. So I hope Congress will extend to them that charity which they have failed to get from me.This reinforces the totally unsubstantiated claim that copyright is designed as a welfare system to "protect" those who have no other means of earning a living. Of course, copyright wasn't designed for that purpose at all. Why the government should support it as a system of welfare for the children of copyright creators is never clearly explained at all. Desai contrasts Clemens' assertions with those of Victor Hugo, who while a big supporter of copyright and authors' rights, also spoke eloquently of how important the public domain is, and how it needs to be supported. He does suggest a royalty system for heirs -- but not a copyright system, saying that the ideas belong to the public.

David writes in:
I am interested in fooling around with LEDs. Nothing fancy I just want to learn some basic stuff, and build some easy circuits. I am 65 years old and have some time on my hands so I want to explore these devices. Could you send me a list of some elementary school level books? I have a couple of grand children that I want to play with; and, I think we could have fun and learn some interesting things together. I don't know what aspect of this technology will interest them, but maybe we will build something that we can attach to an old cd player that will change colors in conjunction with the music.
Well, David, I don't know about elementary school level books, but I can certainly suggest some kits to start you and your grandkids off. LEDs are a great place to start. They don't take a lot of background knowledge or equipment to get started. A good first project is to make some LED throwies. All you need are LEDs, coincell batteries, magnets, and tape. You can get LEDs and batteries online, or from RadioShack or Fry's Electronics if there's one nearby. From there move on to blinkybugs and vibrobots, and then maybe the Sparkle Labs kit for learning electronics, which comes with an excellent booklet full of illustrations and easy-to-follow instructions for popular and simple circuits. As for making an LED blink in time with music, you could follow this Instructable. You might also like playing around with 555 tmers, as they're pretty easy to get going, too. There's a great article on them with sample diagrams in MAKE, Vol. 10. I'm so glad you're excited about building things with your grandkids!
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I just got Jeri Ellsworth's web video shows on my radar, namely The Fat Man and Circuit Girl. She and co-host George Sanger do an awesome job of explaining electrical engineering, science concepts, and various forms of hackery in a clear, straightforward, and fun way.
Jer's just started experimenting with short videos, with limited editing, of her describing something that's caught her interest, like a video lab journal. This vid, Short Circuit #1, is her describing how an analog falling edge detector circuit works (and yes, she knows that she said "variable capacitor" when she meant "variable resistor").
BTW: Jeri will be at Maker Faire in May! She'll be showing off her Easy Bake Oven chip lab.
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I'm still digesting what this means for the future of the internet and entertainment, but something about this feels like (a) the end of all media or (b) the beginning of all media to come. Snoop Dogg has a webshow on Ustream. As I blog, it's live right now. The show consists entirely of him sitting in a chair in his house, smoking a shit-ton of weed, and playing really good old-school music. Sometimes, singing along for a bar or two, or talking back to the chat room intermittently in Snoop-isms. Then, walking away entirely, leaving the webcam fixed on a poster of Snoop on the wall for, like, a half hour at a time. Seriously, that's it. Where the evolutionary arc of reality TV finally ends. Like Father Hood, but with all the plot stripped out. Someone smarter than I will be writing a media analysis column about this soon enough. I don't have anything pithy to say yet, just -- do observe. And, Josh Harris saw it coming. Snoop Dogg Live.
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This is some lost technology we can keep there -- Soviet light bulbs from 1935 with Joseph Stalin's silhouette as the glower. Too bad it didn't cast a Great and Powerful Oz-like ominous head on the walls.

The Lux Spectralis from the Maker Shed is a completely open source deluxe LED blinky. The kit features over 30 different high intensity color modes. These modes range from a simple night-light that shuts off after 5 minutes, strobes, and color washes. Click on the 'More Details' tab in the Maker Shed for a complete list of functions.
More about the Lux Spectralis kit
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