Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object through ...

Convex and concave lenses can both be used to correct defects of vision. The most commonly occurring defects of vision are ‘short sightedness’ and ‘long sightedness’. People who are ‘short sighted’ ...

We compare and contrast concave and convex lenses by drawing ray diagrams. In this Closer Look segment on Lenses, we compare and contrast concave and convex lenses by drawing ray diagrams and ...

Important Physics Diagrams for Class 10: Understanding Physics in Class 10 can be challenging, but using diagrams can make it easier. Many students struggle with the subject, but visual learning ...

Tools can change not only how theorists calculate but also what they calculate about. But two decades ago, Ursula Klein, a scholar from the Max Planck Institute for the History of Science in Berlin, ...

When most of us talk digital cameras, we talk megapixels, ISO, image noise, shot-per-second speed and image processing. We’re tech geeks. But really, none of that ...