RICHMOND, Va. (WRIC) — Are you hoping to catch today’s solar eclipse, but can’t find any eclipse glasses? Here’s a way to safely watch the eclipse without looking at the sun, according to NASA.
Scientists have developed a lens-free mid-infrared camera using a modern twist on pinhole imaging. The system uses nonlinear crystals to convert infrared light into visible, allowing standard sensors ...
Pinhole cameras are not new; they have been around since the beginning of photography. The concept was around long before that. The ancient Chinese and Greeks understood the notion of a pinhole device ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results