How to Choose Sunglasses by rei.com: A great article about lens material, tint, coatings, construction, polarized lenses, UV and visual light transmission, hinges, nose pieces and fitting tips! i www.rei.com/...
Native Eyewear Bigfork Polarized Sunglasses - Men's
'Zip' Gun, jsc.nasa.gov: This Hand-Held Self-Maneuvering Unit was used by astronaut Ed White in the first American "spacewalk" (free space extra-vehicular activity, EVA), on Gemini 4, June 3, 1965. It is an integral unit that contains its own high pressure metering valves and nozzles required to produce controlled thrust. A camera is mounted on the front of the unit. #Gemini_4 #Zip_Gun #NASA
File:HHMU.jpg - Wikipedia, the free encyclopedia
iPhone 5 vs GoPro by Ben Boswell, dxomark: The key to understanding the GoPro results is the extremely wide angle of its lens (170°) compared to that of a typical smartphone camera (70°).This wide angle is very important for an action camera that can be helmet-mounted. It may record an entire event before the user can look at the video. However, it makes some specifications easier to achieve, and some much more difficult... #Video #GoPro #iPhone_5