The amount of downforce created by the wings or spoilers on a car is dependent primarily on two things: 1  The shape, including surface area, aspect ratio and cross-section of the device, and. 2  The device's orientation (or angle of attack).
Without a doubt, Oakley did their homework on the Prizm line. Per Drew Wallace, Product Manager with Oakley Defense, Oakley SI developed the Prizm lenses (both the TR22 and the TR45) in conjunction with the Army Marksmanship Unit, which is a group of people who know what they want and get it.
September 7, 2015. A History of Oakley M Frame. First introduced in 1989 as the âMumbo,â the M Frame has long been a staple in the Oakley line-up and will likely endure for years yet to come. But while the frame shape has more or less remained constant, the iconic sunglasses have seen some tweaks through the decades.