Acoustic Levitation of Liquids? What Wizardry Be This?
High-frequency acoustic signals interfere to create a standing wave, allowing liquids to “levitate” at the nodes, where the two acoustic forces cancel out each other and gravity.
In other words, whoa.
(via PsiVid)
Recycled Cardboard Bicycle F $9
Izhar Gafni, originally from Kibbutz Bror Hayil in the Negev, took the most popular and widely sold vehicle in the community and decided to turn it into an entirely green private venture.
Gafni’s bicycle redefines the idea of green transportation in every way, being environmentally friendly from early stages of production all the way through creation of the final product. The bicycles are made out of recycled and used cardboard.
The primary use, like any bicycle, is to prevent pollution while encouraging physical activity and exercise. In an interview with Newsgeek, Gafni said that the production cost for his recycled bicycles is around $9-12 each, and he estimates it could be sold to a consumer for $60 to 90, depending on what parts they choose to add.
WVU Mars Rover competing in the Rasc-al Robo-ops Competition in Houston being controlled from Morgantown.
Jeffrey Lipton of Fab@Home on 3D Printing
Jeffrey Lipton of Fab@Home demonstrates their 3D printing system at Maker Faire Bay Area 2011. This open source personal manufacturing machine can print with many different materials from plastic to cookie dough. When used in a classroom, Fab@Home furthers STEM educationby making students comfortable with the software, hardware, fabrication, and materials.
A triangular drill bit that drills square holes. This is just straight-up wizardry.
Interesting thread over on The Home Shop Machinist describing the use of H.J. Watts’ 1918 US patent 1,241,176 drill, based on the Reuleaux triangle (Wikipedia), for drilling a (mostly) square hole.
