I 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 11 months ago • 454 views • 5:46Videos (33) | Sift Talk (0) | Blogs (0) | Comments (342) |
YouTube description: How Schlieren imaging works in color, black and white and slow-mo. Filming by Raquel Nuno Sound Effects by A Shell in the Pit (H/T @eric3579)... continue reading
posted by Aard Vark (oritteropo) 6 years 12 months ago • 311 views • 8:59"Protection from deportation and the chance to work have been life-changing for DACA recipients. But if Congress and the White House can’t agree on a bill to protect them within a six-month timeframe,... continue reading
posted by ant 7 years 3 weeks ago • 220 views • 5:28A campaign to identify the marchers spread on social media following the bloody right-wing rally in Charlottesville. The fallout for those who went to Charlottesville to march for hate has begun. Identify... continue reading
posted by newtboy 7 years 1 month 2 weeks ago • 265 views • 1:49YouTube description: Why so many languages invented words for colors in the same order. Subscribe to our channel! http://goo.gl/0bsAjO In 1969, two Berkeley researchers, Paul Kay and Brent Berlin,... continue reading
posted by Aard Vark (oritteropo) 7 years 4 months 2 weeks ago • 634 views • 6:45Everything will end. Even the universe. But in a future so far away that it defies description, there will still be light and therefore a chance for life. It will be around White Dwarfs, the corpses of... continue reading
posted by Mordhaus 7 years 4 months 3 weeks ago • 146 views • 6:29"Game of Thrones is one of the great stories of our time. But with the recent ending of Season 6, a question comes to mind. How will it end? We reveal how George R.R. Martin is likely to finish this epic... continue reading
posted by ant 8 years 2 months 3 weeks ago • 22 views • 13:20An interesting riddle - can you sifters solve it, without resorting to the solution in the video (from 1:25)? iflscience: The following riddle is claimed to have been written by Einstein as a boy. It's... continue reading
posted by Zawash 9 years 2 weeks ago • 52 views • 5:08"Ants don’t eat leaves. They use them to grow white tufts of nutritious fungus to feed their offspring. Their success as farmers has made leafcutter ants into fungus tycoons, complete with their own... continue reading
posted by ant 9 years 3 months 2 weeks ago • 347 views • 3:31Smithsonian channel short story about a great white shark being eaten by a super predator.
posted by Shakylogic 1 decade 3 months 2 weeks ago • 449 views • 2:55"If Cookie Monster wants to find the Cookie of Oz, he must remember the directions. He must follow the chocolate chip road, do the opposite of what the cookie tin man says, and finally, go through the... continue reading
posted by ant 1 decade 4 months 3 weeks ago • 131 views • 5:15Can you figure out the rule? Did you see the exponents pattern? http://youtu.be/AVB8vRC6HIY Why do you make people look stupid? http://bit.ly/12Fmlpl How do you investigate hypotheses? Do you seek... continue reading
posted by eric3579 1 decade 7 months ago • 1,455 views • 4:44