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![]() ![]() Tuesday, November 03, 2009 – Permalink – Pen TrixBe cool in the officeYou've seen people twirl pens in their hands; rolling around their fingers. Here's how to do it. What is Pentrix? Pentrix is the new and improved version of Pentix - The Art of Pen Spinning web site. Pentix has been around since January, 2000 and has grown in popularity among pen spinners ever since. The mission of Pentrix is to teach people how to spin their pens. PenTrix.com There's also Glowsticking: ![]() GlowSticking.com See all Topics Labels: Activities, General, Tutorials <Doug Klippert@ 3:01 AM
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Monday, October 05, 2009 – Permalink – Gambling for TuitionCasino tutoringAn education will probably increase your lifetime earnings. Why not make that probability work for you? Or not. ![]() Teaching probability can be challenging because the mathematical formulas often are too abstract and complex for the students to fully grasp the underlying meaning and effect of the concepts. Games can provide a way to address this issue. For example, the game of roulette can be an exciting application for teaching probability concepts. Illustrating Probability through Roulette More Roulette strategy and statistics: To Be Ahead And Quit The Laymans Guide to Probability "An in-depth but easily readable guide on probability theory, covering various aspects of the theory with a bias to gambling games and strategies. Includes working examples in an excel spreadsheet." See all Topics Labels: Activities, Reference, Tutorials <Doug Klippert@ 3:46 AM
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Sunday, August 02, 2009 – Permalink – Paper PowerWhat do steam and paper have in common?![]() I find origami and paper sculpture intriguing. Ed Bertschy provides a template that can be downloaded and printed on good paper to be used in the construction of a paper steam engine. This paper steam engine is based on a Riches and Watts nominal 2 1/2 horsepower vertical A-frame double acting simple slide-valve steam engine circa 1870-75. The original engine was used to drive a water pump to irrigate the fields of Norfolk. If this model had a scale, it would be roughly 1:19. I had to double the size of the eccentric and strap in order to make it buildable. Everything else is close to scale, but changed in design and appearance because, well, paper isn't iron. ![]() Paper Steam Engine See all Topics Labels: Activities, Free Stuff, Links <Doug Klippert@ 3:05 AM
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Complex control systems using valves requires an automatic control based input of an actuator. The actuator strokes the valve allowing the valve to be positioned accurately and allowing control over a variety of requirements.
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Friday, June 26, 2009 – Permalink – Paper SkyscrapersFold your own steamshipThis beats paper airplanes. If you order you get hard paper cards with all the pieces. ![]() What exactly is a Micromodel? Micromodels are card or paper models that were originally sold from the 1940's through the 1960's. Most were designed by Geoffrey Heighway. MicroModelsUSA See all Topics Labels: Activities, Products <Doug Klippert@ 3:58 AM
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Saturday, April 04, 2009 – Permalink – Indoor-Backyard BattlesADDENDUMIndoor/Backyard BattlesTestosterone relief Wet, rainy, cold weather activity, or just because. "Always follow the rules! If you got hit in the head by a band but you don't want to take the 2-minute penalty (for instance), don't sit there fighting it out. Just suck it up and do the time. No one's going to have fun if all you guys end up doing is yelling at each other about rules and regulations. Take your time out, and keep in mind that, in the long run, you're going to have a much better time. Ultimate Guide to Shooting Rubber Bands Also, Now you can build your own rubber band machine gun! ![]() "This beauty is a fully functional machine gun with TWELVE rotating barrels and a live action trigger. Loads 12 bands per barrel for a whopping 144 rubber bands that shoot off as fast as you can turn the handle!" Rubberband Machine Gun PLANS See all Topics Labels: Activities, Tutorials <Doug Klippert@ 3:43 AM
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Tuesday, March 17, 2009 – Permalink – Hip ReplacementDo it yourselfWell, not exactly. The Northwest has a great PBS radio station in KUOW. Here is a story about how surgeons work, including a blow by blow description of a hip replacement operation. . . . "this hour: the surgeon's hands. How do surgeons keep their hands healthy? What kind of training do they go through to keep their fingers tactile and sensitive? How important is touch to successful surgery? Are the hands of surgeons gifted? Over the past month, we've been talking with people who use their head and their hands in their work. Our 'How To' series continues today with surgeons.
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