The F-16 "Fighting Falcon" is a multi-role jet fighter aircraft originally developed by General Dynamics for the United States Air Force. Designed as an air superiority day fighter, it evolved into a successful all-weather multi-role aircraft. The F-16 is also used by the Air Force's aerial demonstration team, the Thunderbirds.
16 Alternative Wedding Invitations And Save The Dates
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Petzval lens - It was the first camera lens made on the basis of scientific calculation, and was the fastest lens of its time, with an aperture of around f3.5 - compared to the typical ~f16 or more of typical contemporary camera lenses. This 4-5 stop improvement could reduce the average Daguerreotype exposure time from around 10 minutes to 30 seconds.