By Alex Wilde - I’ve engineered a fair number of inexpensive DIY camera hacks. This one is by far the cheapest: it’s free! Simply place a drop of water on the phone’s lens, carefully turn the device over, and the suspended droplet serves as a liquid lens. Behold:
StumbleUpon, the ten-year-old social site, has managed something few Silicon Valley companies have: a comeback. It may not have the buzz -- or billions -- of Facebook, but StumbleUpon has managed to right itself after a brush with obscurity to become one the most powerful sources of traffic on the internet.
Co-founded in 2001 by Garrett Camp and Geoff Smith, the content discovery service started as a novel idea. "We were trying to be your remote control for the Web, the thing that helps you figure out what to look at next," Camp explains.
A Japanese materials scientist has created a set of violin strings from thousands of individual strands of spider silk spun together.
Shigeyoshi Osaki wanted to investigate the mechnical properties of the silk, and specifically the way that it can be packed together, leaving almost no space between the strands. The resulting strings apparently have a "soft and profound timbre".
There are now well over 250,000 apps available for iPhone, iPad and iPod touch, and, surprisingly, many of the best are free.
The following list showcases our pick of the 10 best free iPhone apps, and includes iPhone applications for social networking, travel, news, photography, productivity and more.