From YouTube, "The Earth is a gigantic ball of semi-molten rock, with a heart of iron as hot as the surface of the Sun. Titanic amounts of heat left over from its birth and the radioactive decay of trillions... continue reading
posted by w1ndex 1 year 7 months ago • 354 views • 11:59Videos (24) | Sift Talk (0) | Blogs (0) | Comments (1000) |
From Youtube, "This video is part of a series about climate change supported by Breakthrough Energy – a coalition founded by Bill Gates, that is working to expand clean-energy investment and support... continue reading
posted by w1ndex 3 years 10 months 1 week ago • 82 views • 10:36Global Warming is taking a rare back seat in the news right now, as we deal with the more immediate existential crisis afflicting our civilisation and way of life. But as entire countries are getting shut... continue reading
posted by newtboy 4 years 1 month 2 weeks ago • 347 views • 13:56The World's Biggest Gear Reduction by designer and maker of prototypical machines, devices and tools Daniel de Bruin. This machine visualizes the number googol. That's a 1 with a hundred zeros. A number... continue reading
posted by BSR 4 years 2 months 1 week ago • 1,211 viewsWhat if a Passenger was the ONLY one left to land the plane? Could a passenger theoretically do it, without ANY previous knowledge or training? In todays Special video, I will go through the required... continue reading
posted by BSR 4 years 6 months 3 weeks ago • 25 views • 31:56YouTube description: I kept getting asked about a sequence from the Apollo 11 documentary showing the ignition of a Saturn V upper Stage, known as the S-IVB, in space. After asking around I tracked... continue reading
posted by Aard Vark (oritteropo) 5 years 1 month 3 weeks ago • 325 views • 11:08YouTube description: Joe Barnard left his background in videography and music production to launch his life of amateur rocketry, and he shares his DIY adventures in building rockets on his YouTube channel... continue reading
posted by Aard Vark (oritteropo) 5 years 5 months 1 week ago • 915 views • 9:36"Brexit Britain is fed up with experts. These days we only listen to the bloke down the pub. So in this controlled experiment, we put three experts in a pub and recorded the results for your viewing pleasure. ... continue reading
posted by radx 5 years 9 months 2 weeks ago • 72 views • 58:34YT: I built an A frame hut as a large work space for projects. First I made a celt hatchet to cut timber for the hut. The axe head was made of amphibolite and the handle was made of a species of wattle.... continue reading
posted by nanrod 6 years 3 months 3 weeks ago • 524 views • 9:05I built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the... continue reading
posted by Mordhaus 6 years 6 months 2 weeks ago • 454 views • 5:46YouTube description: This is how we go from single cells to people. EVO-DEVO Huxley B. Mac. Oh Carroll, Carroll Gould, Stephen Jay yeah D-D-D-D-Davidson and Peter See One cell divide and... continue reading
posted by Aard Vark (oritteropo) 6 years 7 months 2 weeks ago • 923 views • 4:46YouTube: You probably know where to pump the cheapest gas and how to get price comparisons online in seconds for headphones and cars. But how would you find the best deal on an M.R.I. or a knee replacement?... continue reading
posted by PlayhousePals 7 years ago • 82 views • 6:09I built this pottery kiln and some pottery from termite mound clay to test an alternative clay source to my usual one from the creek bank. I started by making a large grate from ordinary clay. It was just... continue reading
posted by Mordhaus 7 years 1 month 3 weeks ago • 419 views • 11:27From NYT: "...a really big drain called a spillway. And once you see it full of spiraling water, it is hard to take your eyes off it. For the first time in a decade, January and February have brought... continue reading
posted by chicchorea 7 years 2 months 3 weeks ago • 1,883 views • 1:31Is what is said ... what is implied? YouTube: Last week we talked about language and meaning. Today, Hank explores some of the things that complicate meaning and how we get around that. We’ll explain... continue reading
posted by PlayhousePals 7 years 8 months ago • 596 views • 9:11YouTube: Virtual particles are a way of talking about fields and their interactions as though particles are doing all the work. This is why there is some controversy around using the term 'virtual particles'.... continue reading
posted by PlayhousePals 7 years 8 months 1 week ago • 26 views • 8:43YouTube 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 4 months 4 weeks ago • 1,145 views • 2:59Too bad there are so many who can't get their heads around the facts. YouTube: Bill Nye boils down the basic facts surrounding climate change, and why the rate at which our planet is changing is so important
posted by PlayhousePals 8 years 6 months 4 weeks ago • 738 views • 1:06For all of the lonely hearts out there. Tube: It’s true. You have tiny mites living all around your face. But who are they? And how did they get there?
posted by PlayhousePals 9 years 1 month 4 weeks ago • 48 views • 2:56YouTube description: Make a beautiful colour changing liquid from cabbage juice, and explore the science of indicator solutions in this fun chemistry experiment for children. Download the infosheet... continue reading
posted by Aard Vark (oritteropo) 9 years 2 months ago • 22 views • 3:56- 1
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