Compared to gasoline, hydrogen is lightweight, has a higher energy density and has a variety of potential sources, like biomass. It sounds great, but there are a few drawbacks. Hydrogen-air mixtures can ignite with very low energy input. If air and hydrogen were to mix in an enclosed space, like a parking lot, a hydrogen leak could easily lead to an explosion if a flame was sparked. Due to hydrogen’s low energy ignition, hydrogen must be safely and densely stored.
Remember before the iPhone officially hit the market, people made those cardboard cutout versions so that they could get a good sense of its size and girth? The promotional pictures for the Sanyo Infobar 2 make me think of those, because the surface is remarkably flat, the keys don’t protrude whatsoever, and the edges are […]
There are a handful of places where you will likely be spending the majority of your itme online. You probably hit up Twitter and Facebook to catch up with some friends, Google to search for things, and Wikipedia to look up some quick facts. Where do you turn for video? Most people will say YouTube, […]