Tesla turbines are far more efficient than bladed turbines and take less maintenance.
posted by newtboy![Ranked #15 - 49286 votes - 2221 star points](https://videosift.com/cdm/stars/galaxy/newtboy.png?v=5)
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Tesla turbines are far more efficient than bladed turbines and take less maintenance.
posted by newtboyThis video is about how physics dictates the design of modern windmills - why they are so big, have so few blades, and have such skinny blades.
posted by eric3579Wave power hasn’t yet made a splash because it’s hard to use waves to spin turbines, and because the sea is a harsh place to build things. To learn more, start your googling with these keywords: ... continue reading
posted by newtboyThis is such a 'guy' video
posted by PlayhousePalsPlywood is a simple material made by glueing together thin sheets of wood, known as veneers or plies. These basic elements have remained broadly the same throughout its history. The most significant breakthrough... continue reading
posted by MordhausComparing forward curved blades, backward curved blades and straight blades for a blower impeller.
posted by MordhausYouTube description: These days, giant wind turbines are supplying more and more of our clean energy. And when they break down, they need to be fixed fast. It's a job only a few people are equipped... continue reading
posted by Aard VarkIn this video, we explore the helicopter speed limit, dissymmetry of lift, and what causes retreating blade stalls.
posted by MordhausA newly designed wind turbine leaves behind a loud, noisy and sometimes dangerous traditional feature of bladed turbines.
posted by newtboyI invented the Bow Blower, a combination of the bow drill and forge blower to make a device that can force air into a fire while being easy to construct from commonly occurring natural materials using... continue reading
posted by MordhausIf you're keen to live out your own "Game of Thrones" battle fantasy (ahem, good luck), see Richard Furrer. The Wisconsin-based blacksmith forges Ulfberht style swords, the name given to a group of uncommonly... continue reading
posted by blacklotus90I made this bow and arrow using only primitive tools and materials.The bow is 1.25 m (55 inches) long and shoots 60 cm (2 feet) long arrows. I don't know the draw weight - safe to say greater than 15 kg... continue reading
posted by MordhausYT "Some of the most infuriating and stabbing pain is caused by nothing but a thin sheet of paper. Scientific American editor Ferris Jabr explains why the page of a book can sometimes cause more anguish... continue reading
posted by blackfox42Don't try this at home.
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