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Perpetual motion machines (hypothetical )

Perpetual motion machines (hypothetical )

http://www.youtube.com/watch?v=287qd4uI7-E

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Build an Amazing Tesla CD Turbine Build a real working turbine from recycled CD's! This Tesla CD Turbine is based on the Tesla turbine, which was invented by Nikola Tesla in the early 1900's. Tesla's pumps and motors were unique in that they only used discs, and took advantage of the boundary layer effect. His smallest designs were over 100 horsepower.

14" bandsaw build: Things learned This 14" bandsaw is my third homemade bandsaw. For the most part, the design is based on my 16" bandsaw, but with a number of changes to experiment with simplifying the design. In the picture, from left to right, you can see my first 18" bandsaw, my 16" bandsaw, and my new 14" bandsaw. When building your own bandsaw, it makes more sense to build a larger one because larger bandsaws are much more expensive to buy, but building a bigger bandsaw only adds marginal material and effort over a smaller one.

Why Nikola Tesla was the greatest geek who ever lived Additional notes from the author: If you want to learn more about Tesla, I highly recommend reading Tesla: Man Out of Time Also, this Badass of the week by Ben Thompson is what originally inspired me to write a comic about Tesla. Ben's also got a book out which is packed full of awesome. There's an old movie from the 80s on Netflix Instant Queue right now about Tesla: The Secret of Nikola Tesla. It's corny and full of bad acting, but it paints a fairly accurate depiction of his life.

The Sifter's Top 10 Homes of 2010 If you’re a regular reader of the Sifter you’re familiar with my real estate fascination. I love posting all types of homes. From the unique and interesting to the grand and opulent. Below you will find a collection of the Sifter’s Top 10 Homes from 2010. Click any picture or link to be taken to the original post, enjoy! The Biggest and Most Expensive Home Posted in 2010 DIY Homemade Tesla Coil Check our facebook page for updates and special offers The aim of this design was to get the highest voltage (or longest arcs) possible from a single self contained unit. Check out the new 1kW Tesla Coil! WARNING: High Voltage Device! This coil operates from 12V or 24V SLA batteries.

Chronicle: Universal robotic gripper Robert Barker/University Photography The human hand is an amazing machine that can pick up, move and place objects easily, but for a robot, this "gripping" mechanism is a vexing challenge. Opting for simple elegance, researchers from Cornell, the University of Chicago and iRobot Corp. have created a versatile gripper using everyday ground coffee and a latex party balloon, bypassing traditional designs based on the human hand and fingers. 8 Completely Awesome DIY Home Energy Projects Small-scale renewable energy is a must for a sustainable home – but converting your home to clean energy options can carry a huge initial price tag. We’ve scoured the web for some of the most innovative examples of homemade energy solutions to compile a collective list of DIY projects to make your home greener and more energy efficient without costing you a fortune. From solar water heaters and gadget chargers to homemade super-efficient refrigerators, you’ll find links (with instructions) to some of the best projects you can make at home… Homemade Energy-Save Fridge

Hug Chair by Ilian Milinov A Chair for Clingy Lovers If you’ve ever had someone sit in your lap, you know that 15 minutes is about the max your legs can handle. It’s really not fair. The Hug chair brings simple design and human gesture together for that extra time you want to sit with your significant other. When you’re away from your special someone the extra seat doubles as a convenient space, perfect for catching up on video chat. Hydropower from Reuse Reused: a small stepper motor as found in a printer 2 discarded CD-ROMs a foam tray some long stick (I used a piece of 20mm diameter PVC tube from demolition) a LED one or two tie-wraps a small piece of scrap paper Non-reused: The only non-reused part is the hot melt glue (I recommend the low temp type, especially when working with kids). Tools: scissors, screwdriver to disassemble the printer (not shown), cutting pliers or desoldering tools for (optional, not shown).

Rolling Bridge ? Heatherwick Studio London, UK The studio was commissioned to design a pedestrian bridge to span an inlet of the Grand Union Canal at Paddington Basin, London, and provide an access route for workers and residents. Crucially, the bridge needed to open to allow access for the boat moored in the inlet. The aim was to make the movement the extraordinary aspect of the bridge. DIY VAWT In this project, we will build a small DIY VAWT, Vertical Axis Wind Turbine. We are not expecting to get much over 50 watts of production, though it would be fairly simple to double the size of the blade area to increase power. This DIY VAWT is based on the use of 4 inch PVC pipes, cut in half, for the blades. D.I.Y. Is in Their DNA Some people build their own doghouses or tree houses. Jacob and Melissa Brillhart’s D.I.Y. project was a little more elaborate: They hand-built a 1,500-square-foot house. Never again, they insist. Still, one wonders, why do it in the first place? Sure, they are both trained as architects, and he has his license, but most architects are content to leave the heavy lifting to the contractors.

DIY non-hub builds, the why and how (part-1) Common hub motor kits have a simple construction, which keeps the price low (especially with Chinese mass-production). The low price and easy installation makes them the big seller by a wide margin. However, if you want a build which has unusually good efficiency (so a smaller battery can provide longer range), or…you want unusually good hill-climbing…a non-hub drive system just might be necessary to deliver your goals. Be aware that a non-hub system will by definition be more complex, probably more expensive, and is likely to be noisier. And…the biggest problem is that a non-hub system will be either very expensive (like the EGO, and the M-Drive), or the more affordable drives have issues with longevity and component breakage (Cyclone and GNG).

HephaHeat: Low frequency induction heating elements by Steorn Induction heating relies on the principle of electromagnetic induction. This principle states that when a conductive material is placed in a rapidly changing magnetic field a current will flow in the conductive material. Typically when using an induction heater the material to be heated is placed in a copper coil which has a rapidly changing magnetic field.

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