I make a bunch of video with a Logitech c920, and I have problems with the autofocus because I occasionally want to focus the camera on something other than my face, for example if I have objects on a ...

On Saturday at the Paris climate talks, negotiators released a draft agreement that outlines, in broad strokes, a plan for curbing climate change. Although that draft represents a step beyond the ...

gives formula to show if a point is inside a cylinder. It is based on finding a rotation that maps the cylinder axis onto a cartesian axis, and then calculate the distance from the axis.