binoculars, microscopes and corrective glasses. A lens can be converging (convex) or diverging (concave). The centre of the lens is called the optical centre C. In a ray diagram, a converging lens ...

The Milky Way, our home galaxy, is part of a different supercluster called Laniakea, which, at 500 million light-years wide, ...

Bird-watching is a rewarding pastime that brings you closer to nature, and having a set of the best binoculars for bird-watching can make all the difference to your experience. Whether you’re a ...

We've rounded up the best binoculars for bird-watching currently on the market, complete with our expert reviews on the pairs to buy. Bird-watching is a rewarding pastime that brings you closer to ...

The best compact binoculars are small and lightweight in size, but mighty in optical performance and portability. These are our top pocketable picks. Binoculars are a fantastic way to get a closer ...

Enter the Lunt SunOculars 8x32. This compact pair of solar binoculars has built-in permanent solar filters that allow you to observe the partial phases of solar eclipses and study sunspots.

Learn more › Look over there! That’s a Three-Waddled Bellbird! Oh, snap. Did your binoculars not zoom in enough for you to see it? It makes a huge difference owning a reliable pair of ...

In the heart of a woman. Billy Ray Cyrus shared a steamy photo on Wednesday of him kissing girlfriend Elizabeth Hurley, the latest public display of affection in their unexpected romance.

Elizabeth Hurley/Instagram Elizabeth Hurley and Billy Ray Cyrus continue to spend time together On Sunday, April 27, Hurley shared new photos on Instagram of the couple with the caption ...

Ray Dalio, founder of Bridgewater Associates and an influential voice among investors, has delivered a sobering message where he states that United States citizens are not just dealing with trade ...