Browsing: Lens_numbers

Many common air pollutants—ozone, various sulfur oxides, and even some particulate matter among them—are completely invisible to the eye. How interesting, then, that the EPA and other environmental organizations around the world, use color scales to communicate information about air quality. The US Air Quality Index, for instance, starts at green, meaning good air quality, moves […]

Gryffindor and Slytherin are about to play their annual badminton match. The best players from each house are supposed to face off on court one, the second best on court two, and so on. Slytherin’s coach knows that Gryffindor will put their players on the right courts, in order of their skill, because Gryffindors are […]

In 2009, more than 47 million computers in the U.S. were ready for “end-of-life management”—so hopelessly outmoded that no reasonable amount of refurbishment could redeem them. Market-driven innovation, thus far hewing to the demanding prediction of Moore’s law, means that every few months, the gadgets in our pockets and on our desktops are pushed closer […]