An amazingly thorough deep dive into the acoustic engineering, materials science, and construction of a beautiful pair of speakers. "We construct a pair of large Voigt speakers. I explain the principles... continue reading

posted by blacklotus90 3 weeks 3 days ago • 282 views • 52:56

From Youtube, "By the end of the 21st century, humanity is becoming desperate. Decades of heatwaves and droughts have led to unusually poor harvests, while the warming oceans yield fewer fish each year.... continue reading

posted by w1ndex 3 weeks 6 days ago • 390 views • 9:10

From YT: 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 the innovations... continue reading

posted by Nephelimdream 1 month 3 weeks ago • 34 views • 10:07

YouTube description: The Roadmachines Mono-Rail may have been the only truly useful, fit-for-purpose monorail in the world. Of the hundreds that were built, most were never meant for passengers. But... continue reading

posted by Aard Vark (oritteropo) 2 months ago • 431 views • 3:24

This video explains the process by which I created the flattest CPU in the world, bringing a Ryzen 3950x to within 0.3 microns of flatness error, two orders of magnitude more accurate than what is possible... continue reading

posted by Mordhaus 3 months 2 weeks ago • 58 views • 10:09

https://www.iter.org/ In southern France, 35 nations* are collaborating to build the world's largest tokamak, a magnetic fusion device that has been designed to prove the feasibility of fusion as a... continue reading

posted by eric3579 3 months 3 weeks ago • 831 views • 7:59

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 4 months 2 weeks ago • 78 views • 10:36

YouTube description: Tejas Sidnal is an architect who believes people in his profession have a responsibility to rid the world of air pollution. Which is why he founded Carbon Craft Design, a startup... continue reading

posted by Aard Vark (oritteropo) 4 months 3 weeks ago • 84 views • 2:25

Each season has its own distinctive flowers, and in Japan early May sees the wisteria blossom. Many people travel at that time to see fine examples of wisteria, a spreading vine that can be arranged over... continue reading

posted by newtboy 5 months 2 weeks ago • 383 views • 4:28

The stereotypical modern playground — with its bright colors and rubberized flooring — is designed to be clean, safe, and lawsuit-proof. But that isn't necessarily the best design for kids. US playground... continue reading

posted by BSR 6 months 1 week ago • 106 views • 5:44

From Youtube, "Well... this took longer than expected. I am sorry you had to wait so long for me to finish this video, I had some reading to do, then write the video, record the audio, and then the... continue reading

posted by w1ndex 6 months 3 weeks ago • 15 views • 1:09:23

In the debut episode of the Logistics of D-Day we explore the logic and planning that resulted in Normandy being chosen as the location for the largest amphibious invasion in the history of human kind. -yt

posted by eric3579 6 months 3 weeks ago • 788 views • 14:54

YouTube description: People use boats for all kinds of reasons, and in the same way, there are all kinds, shapes, sizes, and ages of locks used for waterway navigation across the world. Freight is big... continue reading

posted by Aard Vark (oritteropo) 7 months 2 weeks ago • 231 views • 10:37

Global 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 7 months 4 weeks ago • 342 views • 13:56

In most developed countries, workers have the right to a certain number of paid sick days. It’s a policy that isn’t rooted in just generosity — during pandemics like the novel coronavirus, it can... continue reading

posted by newtboy 8 months ago • 429 views • 6:33

YouTube description: This video demonstrate how differently the air spreads when coughing. This visualizes the high importance of the World Health Organization's behavioral recommendations for protection... continue reading

posted by Aard Vark (oritteropo) 8 months 1 week ago • 424 views • 1:09

The 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 8 months 3 weeks ago • 1,180 views