Metals have a crystal structure. But they're not one big crystal, they're lots of small crystals called grains. The size of the grains affects the physical properties of the metal, like hardness, toughness,... continue reading

posted by newtboy 8 months 3 weeks ago • 135 views • 8:45

From Youtube, "Bowling has been reinvented many times over the past seven thousand years but especially in the last 30. This is the fascinating physics of balls, oil, lane and pins. Huge thanks to... continue reading

posted by w1ndex 9 months 1 week ago • 471 views • 28:01

"What different clouds mean, explained for kids. Welcome to our first-ever week of programming for kids! If you’re standing outside and you look up, you’ll likely see something familiar above... continue reading

posted by ant 1 year 10 months ago • 66 views • 8:03

"It was so obvious! All I had to do was "Squeek squeeeken squeek!' ..."

posted by ant 1 year 11 months 1 week ago • 82 views • 5:11

From Youtube, "I bought 10,000 shade balls and tried to swim in them. They appear to act like a non-Newtonian fluid: rigid under high shear stress, but they flow like a liquid under low shear."

posted by w1ndex 3 years 2 weeks ago • 102 views • 10:42

Source: SmarterEveryDay

posted by b4rringt0n 3 years 2 months ago • 1,348 views • 16:13

YouTube description: How many tries does it take an average player to do what professional pool players do on the first try? Your Average Pool Player attempts Corey Deuel's famous 2004 US Open draw... continue reading

posted by Aard Vark (oritteropo) 3 years 7 months 3 weeks ago • 1,731 views • 5:07

A game of swingball in a pubic space that teaches you how to say iambic Pentameter. A famous Shakespearian text is on the lamp-post, people say two words each, hitting the ball on the accent only.

"Pill bugs. Doodle bugs. Potato bugs. Wood Shrimp. Whatever you call them, there’s something less creepy about these critters than other insects. Maybe it’s because they’re not insects at all..." ... continue reading

posted by ant 4 years 1 month 4 weeks ago • 518 views • 3:30

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) 4 years 4 months 2 weeks ago • 724 views • 3:34

Calcium carbide and water are being mixed in the milk jugs, which react together to produce acetylene gas. Acetylene is very explosive and is what is being ignited on these cases.

posted by Mordhaus 4 years 6 months ago • 689 views • 5:27

South Park is home to a surprising number of tempting foodstuffs. Granted, they're all subtly gross in one way or another, but that doesn't make Chef's Chocolate Salty Balls sound any less appealing. Especially... continue reading

posted by Mordhaus 5 years 2 months 1 week ago • 258 views • 9:33

There’s no mammal in the world quite like the tree pangolin. Covered in reptilian-like scales that protect it from predators in the wild, the pangolin will curl into a ball when threatened. Unfortunately,... continue reading

posted by newtboy 5 years 2 months 3 weeks ago • 2,215 views • 1:48

This video, courtesy the Illinois Geological Survey, shows how earthquake liquefaction can affect buildings and buried structures. The concept presented is elementary but will provide you a basic understanding... continue reading

posted by Mordhaus 5 years 4 months 3 weeks ago • 807 views • 1:14

This is great!!!!

posted by bjornenlinda 5 years 7 months 1 week ago • 1,536 views • 15 secs

-How much did that cost? -$800 for disposal, then $1400 for the water ball. •Were your parents mad? -yes. •Where did you buy the Waterballs? -China •How much of them? -1600 pounds, 25 Million. ... continue reading

posted by Mordhaus 5 years 10 months 2 weeks ago • 341 views • 8:40

Skip to 5:40 if you want to see the action without the science and how to.

posted by Mordhaus 6 years 4 months 3 weeks ago • 598 views • 9:58