Magnetic levitation
More fun with maglev (and LN2). Magnetic Levitation [Thanks, Patti!] Related: Make stuff float, with the magnetic levitation kit Superconducting Maglev train models Diamagnetic levitation on a jar lid
Science
Solar pendulum
From the MAKE Flickr photo pool Flickr member Pocket-sized breadboarded a solar/magnetic pendulum as seen in the BEAM book – JunkBots, Bugbots, and Bots on Wheels The self-sufficiency of solar power can really up the fun-factor in these builds – Magnetic Pendulum on Flickr This site explains the project a bit more, and highlighting it’s […]
Vintage science and tech illustrations
Wonderful collection of illustrations from science books of the mid-20th century. Vintage Science Flickr Pool [via]
DIY planetarium projectors & museum
Planetarium makers do awesome work, even building “home-domes” for exhibition – The Home Planetarium Association welcomes all those who build small planetariums for home, school, museum, or other personal use. A quarterly newsletter is produced; This includes collecting toy planetaria, operating older or small professional units, or just fondly remembering childhood trips to planetariums around […]
HOW TO – Shatter glass with your voice
The cassette tape company Memorex seared the image of Ella Fitzgerald shattering a glass with her voice into many people’s collective memory in a television commercial that ran in the 1980s. With the right tools, good pitch, and a strong voice (or an amplifier), you can do this at home. How to Break a Glass […]
Build your own water quality tester
In response to our item about the commercial TDS (total dissolved solids) water testing tool, somebody sent us a link to this homemade meter, which tests for TDS, EC (electrical conductivity), PPM (parts per million). EC/TDS/PPM Meter On Limited Budget – Link Related: Testing your own drinking water – Link
Attention DC Dorks!
Don’t forget: This Tuesday (tomorrow, Feb 26, 7-9pm) is the next Dorkbot DC. Presenters include Katie Bechtold, a spacecraft flight software developer and controller, talking about the Mercury MESSENGER mission, Justin Sabe on making cheap MIDI controlled instruments from toys, and Alberto Gaitán, presenting Part Two, The Software, of his talk on Remembrancer, the amazing […]