I'd always assumed the moisture for black ice just came from the weather — it rains a little, then it freezes, and voila. But that's not the case. Black ice, in case this is a regional colloquialism that doesn't translate everywhere, is actually transparent ice. It's a thin layer of slippery stuff that forms on roads and is almost imperceptible to the eye. You look and see a normal road. You don't see the ice.
Technically, black ice can form from any source of moisture, but the big one turns out to be the droplets of water that condense out of vehicle tailpipe exhaust and dribble onto the roadway.
Image: Black Ice, a Creative Commons Attribution (2.0) image from cata13es's photostream
UC Berkeley’s Museum of Vertebrate Zoology employ a colony of flesh-eating beetles to clean the meat off the bones of animals whose bones they want to preserve for posterity. (KQED’s Deep Look)
Eliza writes, “A researcher from Lehigh University has invented a light-based pacemaker for fruit flies, and says a human version is ‘not impossible.’ The pacemaker relies on the new technique of ‘optogenetics,’ in which light-sensitive proteins are inserted into certain cells, allowing those cells to be activated by pulses of light. Here, the proteins were […]
San Francisco recently doubled the number of walls it was coating with hydrophobic paint, which is supposed to deter wall-pissing by making the urine spray back all over the pee-er.
Lean Project Management, as the name suggests, is a popular method for wasting less time and effort over the duration of a project. By focusing on prioritizing tasks, Project Managers are able to boost productivity, meet goals, and, inevitably, impress the execs. This exam prep course is led by the accredited Management and Strategy Institute, […]
This Smartphone Photo Lens Kit arms you with six unique smartphone photography accessories, so you can take high-quality and well-composed photos of any subject from small insects to expansive landscapes.6 unique lensesRolls up neatly for transportTripod for stabilitySmall lenses attach seamlessly with magnetMicroscope and 8x telephoto lenses attach with a case (case attaches to phone)Lens wallet […]
Inspired by the universality of symbols, the founders of Noun Project began to collect thousands of hand-drawn icons. The concept has since transformed into a massive digital collection of 150,000+ unique icons that fuel the work of designers every day. Spend less time crafting icons and more time putting amazing designs out into the world with […]