Warsaw under construction, 1973
Today, 25 years ago (23 August 1989), about two million people held hands to form a human chain over 600 km (370 mi) long in protest against illegal Soviet occupation, linking three capital cities – Tallinn in Estonia, Riga in Latvia and Vilnius in Lithuania. This peaceful political demonstration is known as the Baltic Way or Baltic Chain (also Chain of Freedom). read more here
Sloshing is a problem with which anyone who has carried an overly full cup is familiar. Because of their freedom to flow and conform to any shape, fluids can shift their shape and center of mass drastically when transported. The issue can be especially pronounced in a partially-filled tank. The sloshing of water in a tank on a pick-up truck, for example, can be enough to rock the entire vehicle. One way to deal with sloshing is actively-controlled vibration damping - in other words, making small movements in response to the sloshing to keep the amplitude small. This is exactly the kind of compensation we do when carrying a mug of coffee without spilling. (Image credit: Bosch Rexroth; source)
Educate the children and it won’t be necessary to punish the men.
FROM MEGABYTE TO YOTTABYTE
Each new section represents a 10x increase, except for the last (zettabytes to yottabytes), which is 1000x.
This infographic looks into analog, digital and organic storage capacities like sperm or all words ever spoken.
There is another you, sitting on an identical Earth, about 10 to the power of 10 to the power of 120 light years awayMichael Hanlon – On multiverses (via we-are-star-stuff)
Shortest-known abstract for a serious scientific paper: only 2 words
(via: Boing Boing)
PanAm building, Manhattan
Robot Self-Assembles And Walks
by Michael Keller
Roboticists have developed a flat machine that can fold itself into an operational form and take a walk.
Built mostly from paper and polystyrene plastic that shrinks into a memorized shape when heated, the robot can assemble in around four minutes. It can crawl at roughly 2 inches per second and make turns. The work by Harvard and MIT engineers represents the first time that a robot has self-assembled and performed a function without humans needing to intervene.
“Here we created a full electromechanical system that was embedded into one flat sheet,” said Harvard Microrobotics Lab researcher and doctoral student Sam Felton. “Imagine a ream of dozens of robotic satellites sandwiched together so that they could be sent up to space and then assemble themselves remotely once they get there–they could take images, collect data and more.”
Me going to see Malevich at the Tate Modern and walking along the South Bank on Saturday.