YouTube description: Why does the exhaust from the Space shuttle boosters & engines look completely different? There's a huge variety in the appearance of rocket exhausts because different fuels, different... continue reading

posted by Aard Vark (oritteropo) 6 years 3 months 3 weeks ago • 493 views • 11:26

n Porthcurno, Cornwall, there's an old telegraph cable landing station. It's how Britain talked to the Empire -- and it's now a museum. But the technology here isn't quite as obsolete as you might think.

posted by nanrod 6 years 4 months ago • 329 views • 3:57

Cap D looks into the escherian stairwell viral video from the Rochester Institute of Technology from back in 2013, and how a hoax can endure long beyond it's debunking.

posted by Fantomas 6 years 4 months ago • 1,295 views • 15:42

YouTube description: Let's find out how they put 3D images into glass objects. Known as a 'Bubblegram', vitrography or sub-surface laser engraving, this technology has been around for a very long time... continue reading

posted by Aard Vark (oritteropo) 6 years 8 months 1 week ago • 308 views • 6:28

How to dial your phone, now that the operator won't do all the work for you. A public training film from well within living memory, at a time when youngsters might need the instruction in order to use... continue reading

posted by Buttle 6 years 8 months 2 weeks ago • 1,505 views • 9:51

At the old hut site (the new one being temporarily cut off by flooding) I made lime mortar from the shells of rainforest snails by firing them in a kiln, slaking them in water, mixing them into lime putty.... continue reading

posted by Mordhaus 6 years 9 months 2 weeks ago • 408 views • 7:08

YT: 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 11 months ago • 524 views • 9:05

YT - Primitive Culture Published on Jan 18, 2018 My Video Show about Make the Kind of fish trap in the shape of a basket with a hole at the small end. the wide end is dropped over a school of fish to... continue reading

posted by Buck 6 years 11 months 1 week ago • 332 views • 10:58

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 7 years 1 month 3 weeks ago • 454 views • 5:46

I made a brick mold that makes bricks 25 x 12.5 x 7.5 cm from wood. A log was split and mortise and tenon joints were carved using a stone chisel and sharp rocks. The mold was lashed together with cane... continue reading

posted by Mordhaus 7 years 2 months 4 weeks ago • 1,024 views • 10:47

youtube- TEDx Talks Published on Sep 7, 2017 Imagine a global "Hive Mind" that can tap the knowledge, wisdom, insights, and intuitions of millions of people, and produce a super-intelligence that is... continue reading

posted by Buck 7 years 3 months ago • 119 views • 15:59

YT: The National Institute of Standards and Technology, NIST, sells Standard Reference Materials, or SRMs for short. They're analysed, quantified, and certified substances: everything from metals, to elements,... continue reading

posted by Fantomas 7 years 3 months 3 weeks ago • 474 views • 4:13

The purpose of this project was to test a simplified blower design connected to a furnace. I purposely did this to show that people in most natural environments should be able to replicate this design... continue reading

posted by Mekanikal 7 years 3 months 3 weeks ago • 559 views • 9:16

Published on Jan 5, 2017 Simon Sinek explains how the millennial generation became so entitled. A combination of failed parenting strategies, technology, impatience and environment have created a wave... continue reading

posted by bobknight33 7 years 3 months 4 weeks ago • 1,539 views • 12:35

I built a water powered hammer called a “Monjolo”. I started by making a water spout from half a hollow log to direct water from the creek. This was set up in the creek and water flowed through it.... continue reading

posted by Joe Motion (lurgee) 7 years 7 months 3 weeks ago • 1,217 views • 8:51

YouTube description: In the high-altitude city of La Paz, Bolivia, rates of heart problems dwarf those of cities at sea level. But an unexpected partnership between medicine and art is helping address... continue reading

posted by Aard Vark (oritteropo) 7 years 7 months 4 weeks ago • 69 views • 3:08

YouTube description: We're pretty good at inventing things, but stealing from nature is a great way to solve some problems! Hosted by: Michael Aranda (H/T @eric3579)... continue reading

posted by Aard Vark (oritteropo) 7 years 8 months 1 week ago • 368 views • 8:47

I 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 9 months ago • 420 views • 11:27