Just as in a plane, you can stall if you assume too steep an angle of attack.
Instead of giving up, Mr Obama needs to change his angle of attack.
As the capsule thunders downwards, it ejects ballast blocks to move its centre of gravity and tilt its angle of attack.
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If two-factor authentication becomes ubiquitous and the cybercriminal industry continues to shift its attention to smartphones, this obscure angle of attack might just catch on.
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Mike Phillips was immediately on the centre's inside shoulder and the final act was supplied by Walker, as the Scotland left wing appeared on the other flank to switch the angle of attack again.
Hamilton will continue to run with an aerodynamic package suited to Monza's low-downforce circuit, which includes a rear wing with a lower angle of attack - approximately 40 degrees compared to Button's conventional rear wing, which is raised at around 70 degrees.
The control surfaces, acting independently or together with a variable angle of attack of up to 20 degrees (front) and 40 degrees (rear), move the car's center of aerodynamic balance around to compensate for the forces of pitch, roll, yaw and high-speed lift.
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The device saves all the data from each hit, namely the animation, path, putter-face angle at impact and throughout the stroke, angle of attack, tempo, impact speed and swing path distance -- in other words, more information than most players would know what to do with.
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Then again, RIM has made no secret of its aspirations to push ever deeper into the consumer space -- a place where Apple shines -- and again, RIM's touch paradigm needs some serious tweaking, so maybe this guy is going to leave the Bolds and Niagaras of the world to the pros and attack the multimedia-hungry masses with an entirely different angle.
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The usually reliable Carter lost possession near the Wallabies try-line and on the counter attack, full-back Beale sprinted two-thirds of the field, running at an angle to stretch the New Zealand defence and touch down.
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