Inspired by the complex fly eye, a research team has developed a hemispherical digital camera with nearly 200 tiny lenses, delivering exceptionally wide-angle field of view and sharp images. The new camera — a rounded half bubble, similar to a bulging… Continue reading →
Rechargeable batteries are no doubt an investment. The upfront cost makes those $5 single-use batteries seem much more appealing.
But despite the price, The National Electrical Manufacturers Association has estimated that U.S. demand for rechargeables is growing twice as fast as demand for non-rechargeables.
Just how high is that demand? More than 350 million rechargeable batteries are [...] Continue reading →