A newly designed wind turbine leaves behind a loud, noisy and sometimes dangerous traditional feature of bladed turbines.
posted by newtboy 7 years 8 months ago • 801 views • 1:14Videos (34) | Sift Talk (0) | Blogs (0) | Comments (1000) |
YT: As the world switches to renewable energy - and we are switching - there's a problem you might not expect: balancing the grid. Rotational mass and system inertia are the things that keep your lights... continue reading
posted by Fantomas 7 years 9 months ago • 828 views • 4:06I 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 Mordhaus 7 years 9 months 3 weeks ago • 1,388 views • 4:32YouTube description: On La Gomera, a small island in Spain’s Canary Islands, the last speakers of a language without words reside. "El Silbo," a whistled communication used in rural and isolated areas,... continue reading
posted by Aard Vark (oritteropo) 7 years 9 months 3 weeks ago • 197 views • 3:53I built this grass hut up on a ridge. It's roughly parallel with the tiled hut and wattle and daub hut that are a couple of hundred meters away down in a valley. I built it on a ridge to get away from... continue reading
posted by Mordhaus 7 years 10 months 2 weeks ago • 567 views • 4:17This is a recent construction from old schematics, in Holland Massachusetts. It took two years to build. The same type of saw could also be powered by water (in Norway they'd call it oppgangs sag). ... continue reading
posted by Aard Vark (oritteropo) 8 years ago • 1,011 views • 8:59YouTube Description: And how it got its name. Subscribe to our channel! http://goo.gl/0bsAjO El Niño is a weather phenomenon that occurs irregularly in the eastern tropical Pacific every... continue reading
posted by Aard Vark (oritteropo) 8 years 5 months ago • 1,145 views • 2:59YouTube: Earlier this week, we covered the difference between brand name and generic drugs. To be honest, we taped that episode a few weeks ago. It takes us some time to work out magic, add graphics, and... continue reading
posted by PlayhousePals 8 years 6 months ago • 179 views • 3:22Watch these charismatic creatures shoot their tongues out like arrows to catch an insect, mimic leaves swaying in the wind, and display their hidden colors—and learn just how they do it. Click here... continue reading
posted by newtboy 8 years 9 months ago • 7,071 views • 3:39"Hopefully it won't break." YouTube: Almost there making a high power Tesla coil that can stun the world! But this thing is quite challenging. Winding of the coil is another story!
posted by PlayhousePals 9 years 2 weeks ago • 160 views • 4:22In which the narrator shows how effective use of quadrants can make a movie scene come alive. It'll give you a different perpective on movies. "One of the many pleasures of Nicolas Winding Refn’s “Drive”... continue reading
posted by blacklotus90 9 years 3 months 2 weeks ago • 65 views • 3:34... or how to soil a pristine lab coat! YouTube Description: Gav and Dan are in the GE lab using nanotechnology to show you cool liquid physics at 2500fps. The first experiment shows a superhydrophobic... continue reading
posted by PlayhousePals 1 decade 4 months 1 week ago • 1,101 views • 5:34Professor Mike Merrifield talks about how all the stars of a galaxy move around at the same speed, which would make the the pretty spiral pattern impossible. He explains the "winding paradox" and how then... continue reading
posted by RFlagg 1 decade 2 years 10 months 1 week ago • 2,236 views • 7:43