Rossi--a lone Italian inventor with no real credentials and a history as a convicted scam artist--has convinced a small army of researchers that his box can harness a new type of nuclear reaction. What if they're right?
By Steve FeatherstonePosted 10.23.2012 at 10:32 am 107 Comments
Powerful X-ray images are showing for the first time what happens inside a working battery as it discharges power, and it could lead to improvements for a new type of battery that promises better storage capacity at a lower cost.
Lithium-ion batteries work by stacking active ingredients in layers. In your laptop and phone, the layers are stacked into a block, but a new process could make that seem quaint: spray-paint the necessary layers onto any surface like paint, to make an instant battery anywhere.
By Evgeny Katz as told to Flora LichtmanPosted 06.26.2012 at 3:30 pm 8 Comments
Our biofuel cell generates power from glucose sugar in a snail's body. We drill holes through the shell and implant enzyme-coated electrodes in the hemolymph, or snail blood, that naturally collects between the snail's body and shell. Like any battery, ours is based on chemical reactions that create a flow of electrons. One electrode grabs electrons from glucose in the hemolymph. The electrons then travel through an external circuit—including any device we want to power—and end up at the opposing electrode. There, the electrons react with oxygen in the hemolymph to form water.
Nap Pepin had been waiting on the side of the highway near his Alberta, Canada, home for more than hour when the tow truck finally pulled up. The driver looked at the stranded electronics technologist and his homebuilt electric trike and asked, "Ran out of juice, eh?" Pepin wasn't sure what the problem was, but he knew he still had plenty of charge.
An algorithm called the fast Fourier transform is one of the most important aspects of your digital life that you never think about. It’s a core concept in information technology, making possible the signal processing, image and audio compression, and other complex mathematics necessary for you to cram every episode of Breaking Bad onto your mobile device alongside every track Jay-Z ever made, and then play it all back without a hitch.