Technology
Get flash to fully experience Pearltrees
Magenta Ain't A Colour
A beam of white light is made up of all the colours in the spectrum. The range extends from red through to violet, with orange, yellow, green and blue in between. But there is one colour that is notable by its absence.
How Stuff Works
IT stuff
Twine by Supermechanical is a web-enabled sensor module that can connect all manner of things to the Internet ( video ). Internal and external sensors monitor a variety of inputs such as movement or temperature and then generate messages about that information—for instance, Twine can send an email when a basement is flooding, or a text when a door is opened. Twine is configured by the companion Spool app, which lets users set up simple rules for the device to follow. David Carr and John Kestner of Supermechanical are raising funds and pre-selling Twine on Kickstarter .
Twine, A Simple and Versatile Web-Enabled Sensor Module
1, aircraft radial engine 2, oval Regulation 3, sewing machines 4, Malta Cross movement - second hand movement used to control the clock 5, auto change file mechanism
Simple animation to explain complex principles - Electronics
You'll just have to watch the new OK Go to appreciate its geeky awesomeness. But a little bit of background: The video, directed by James Frost, began with a sketch dreamed up the band. Then, they put it to Mindshare/Synnlabs , a collective of engineers and geeks that consults on ambitious art projects, to pull it off:
Eye Candy: OK Go's Insane Rube Goldberg Machine
Despite its incredibly low density, aerogel is one of the most powerful materials on the planet. It can support thousands of times its own weight, block out intense heat, cold and sound – yet it is 1,000 times less dense than glass, nearly as transparent and is composed of %99.8 air. The lowest-density silica-based aerogels are even lighter than air. Despite its fragility in certain regards and its incredible lack of density, aerogel has amazing thermal, acoustical and electrical insulation properties as illustrated by the images here.