The F-number of a photographic lens is a measure of its light-gathering ability, and is expressed as its aperture diameter divided by its focal length. Lenses with low F-numbers are prized by ...

The Raspberry Pi has provided experimenters with many channels of enquiry, and for me perhaps the furthest into uncharted waters it has led me has come through its camera interface. At a superficial ...

The U.S. Air Force planned in 2024 to certify the F-117A Nighthawk to be able to refuel from the KC-46A Pegasus, the service's newest tanker. Two F-117 Nighthawks have been spotted while refueling ...