Shains were created by owner Ewa Martinoff who, while driving home in LA traffic from her corporate job, was musing over her laptop computer’s power cord ‘bundler’ which she had wrapped around her wrist. She had long ago realized that everyone should have a chance and voice to make their own statement and that this bracelet/power cord ‘bundler’ could be a great means to that end. The awareness of how much we consume and how valuable our resources are, meant it couldn’t just be another product. A year later and many trials to ensure an eco-friendly product proposition, Shains debuted in stores in November 2007.
Archimedes' screw consists of a screw inside a hollow pipe. The screw is turned usually by a windmill or by manual labor. As the shaft turns, the bottom end scoops up a volume of water. This water will slide up in the spiral tube, until it finally pours out from the top of the tube and feeds the irrigation systems. The screw was used mostly for draining water out of mines or other areas of low lying water.
You can build one with a kit from Tedco.
Dating back to the first century when glass was first invented, the Roman's were investigating the use of glass and how viewing objects through it, made the objects appear larger.
During the 1590's, two Dutch spectacle makers, Zacharias Jansen and his father Hans started experimenting with glass lenses. They put several lenses in a tube and made a very important discovery. The object near the end of the tube appeared to be greatly enlarged, much larger than any simple magnifying glass could achieve by itself.
Their first microscopes were more of a novelty than a scientific tool since maximum magnification was only around 9x and the images were somewhat blurry.
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