They say imitation is the sincerest form of flattery, but when it comes to protective filters for lenses, it may not be such a good thing. A photographer thought he scored a good deal but was not amused when he found out his newly bought 77mm Nikon NC filter was far from authentic.
The difference was quite apparent when he compared it with an original filter sold by an authorized Nikon dealer. Some giveaways that your filter is a counterfeit include a Nikon logo and inscriptions that are less vibrant; duller colors on the packaging; and, the most obvious--an instruction manual looks like it was printed on a cheap printer. … Read more
SAN FRANCISCO--A holiday "tree" lot here at Levi Strauss & Company's headquarters is offering up a green alternative to live trees.
Antlre Creative, a San Francisco-based eco-conscious design company, created 100 percent recycled cardboard trees, which grew into a forest in Levi's buidling lobby (shown above).
The large trees sell for $35, and small ones for $25. Proceeds from the fundraiser go to Friends of the Urban Forest. These "greener" trees are produced and manufactured entirely with solar energy and are inspired by recycling.
And while we're in the holiday spirit, here's … Read more
Back at the start of the Space Age, satellites weren't always the high-tech wonders that they are today.
Behold the 135-foot Echo II, NASA's "rigidized balloon," which served as a passive communications satellite. Here, it's seen undergoing a tensile stress test in a dirigible hanger at Weekesville, N.C. Microwave signals sent from Earth bounced off the orbiting metallic balloon to another point back on Earth.
NASA sent Echo II into orbit on January 25, 1964, and it was in service until June 1969, when it re-entered the atmosphere and burned up. Its predecessor, the … Read more
The Visible Infrared Imager Radiometer Suite, or VIIRS, onboard NASA's newest Earth-observing satellite acquired its first image this week, a stunning view of Eastern North America from Canada's Hudson Bay past Florida to the northern coast of Venezuela.
The low-Earth orbit satellite known as NPP carries five instruments as it travels at 16,640mph at an altitude of 512 miles. It was launched October 29 from Vandenberg Air Force base in California on a mission to observe Earth's environment and climate.
NASA this past weekend offered up tours of its recently souped up airborne telescope, built inside a modified Boeing 747 aircraft. The Stratospheric Observatory for Infrared Astronomy, or SOFIA, is the world's largest airborne observatory.
SOFIA carries a telescope with a 100-inch reflecting mirror that conducts astronomy research not possible with ground-based telescopes, NASA said. It's normally housed at NASA's Dryden Aircraft Operations Facility in Palmdale, Calif., but CNET got to see it Friday at a press event at the NASA Ames Research Center in Mountain View, Calif.
Ames Research Center Director Pete Worden said SOFIA is … Read more
SANTA ROSA, Calif.--On-demand aviation, the idea that mobility one day can be just as personal and convenient in the air as it is on the ground, is a lofty goal. And it's what competitors at NASA's Green Flight Challenge going on here this week are trying to attain.
Aerospace Engineer Mark Moore said the challenge, which is one of NASA's Centennial Challenges and sponsored by Google, is about finding ways to use the layers of uncluttered 3D space above us to get around--and how to do it in an energy-efficient manner.
Commercial planes currently average about … Read more