The Event Horizon Telescope Collaboration observed the supermassive black holes at the center of M87 and our Milky Way galaxy (SgrA*) finding the dark central shadow in accordance with General Relativity,... continue reading

posted by eric3579 1 month 1 week ago • 283 views • 5:24

YouTube description: You can make a movable hole in soap film with a loop of thread. It's surprising when you first see and it's fun to think about why it behaves the way it does. It's also a useful... continue reading

posted by Aard Vark (oritteropo) 2 months ago • 503 views • 6:03

YouTube description: The Great Blue Hole is a massive underwater sinkhole off the coast of Belize. In the winter of 2018, a submarine crew from Aquatica Submarines ventured to the bottom of the hole... continue reading

posted by Aard Vark (oritteropo) 2 months 2 weeks ago • 1,547 views • 3:38

"NASA's Curiosity Mars Rover has already descended from Vera Rubin Ridge, a region of Mount Sharp that it has been exploring for more than a year. But before it left, the rover took a 360-degree panorama... continue reading

posted by ant 3 months ago • 7 views • 1:31

YouTube description: Researchers from NVIDIA, led by Guilin Liu, introduced a state-of-the-art deep learning method that can edit images or reconstruct a corrupted image, one that has holes or is missing... continue reading

posted by Aard Vark (oritteropo) 1 year 3 weeks ago • 902 views • 2:15

YouTube description: Featuring Tadashi Tokieda - more Tadashi videos at: http://bit.ly/tadashi_vids Tadashi Tokieda is a Professor of Mathematics at Stanford University (though this was filmed when... continue reading

posted by Aard Vark (oritteropo) 1 year 2 months 2 weeks ago • 274 views • 3:24

YouTube description: In Göttingen, Germany, there's a four-tonne steel ball that can be raised up a 14-metre tower -- and then dropped in less than two seconds, crashing back to earth. It makes tiny,... continue reading

posted by Aard Vark (oritteropo) 1 year 3 months ago • 722 views • 3:34

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 1 year 4 months ago • 323 views • 10:58

On the morning of July 7, 1944, Captain Ben L. Salomon of the U.S. Army’s 105th Infantry, commissioned as a dentist, single-handedly held off a fierce attack of an overwhelming force of Japanese soldiers... continue reading

posted by Mordhaus 1 year 4 months 2 weeks ago • 35 views • 6:24

Last year LIGO announced the detection of gravitational waves from the merger of two black holes. The science world went a little crazy. Only a few weeks ago a new rumour emerged: that LIGO had, for the... continue reading

posted by Mordhaus 1 year 8 months 1 week ago • 147 views • 15:51

For this project you need cardboard, cutting knife, battery, electric motor, small nut and glue. The most important part - to measure needed coins and cut right holes :) This machine is very effective,... continue reading

posted by Mordhaus 1 year 8 months 2 weeks ago • 213 views • 4:59

YouTube description: Black holes are scary things. But they also might reveal the true nature of the universe to us. (via laughingsquid.com, H/T @eric3579)... continue reading

posted by Aard Vark (oritteropo) 1 year 8 months 3 weeks ago • 399 views • 10:13

It is apparently a very common method to catch catfish and eels that are in the marshy paddies.

posted by Mordhaus 1 year 10 months 3 weeks ago • 264 views • 10:03

This is probably the biggest loophole in German gun law: Because this arrow shooting airgun does not shoot a projetile THROUGH a barrel but OVER a barrel, the BKA (highest German authority on gun assessments)... continue reading

posted by Mordhaus 1 year 11 months 1 week ago • 332 views • 5:31

Scientists have JUST published this new observation. On January 4th, 2017 they detected the merger of two black holes 3 billion light-years away. This marks the furthest detection they've been able to... continue reading

posted by Mordhaus 1 year 11 months 3 weeks ago • 503 views • 5:02

The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Norsupyssy"... continue reading

posted by Mordhaus 1 year 12 months ago • 39 views • 10:14

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) 2 years 2 weeks ago • 1,206 views • 8:51

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 2 years 1 month 3 weeks ago • 413 views • 11:27