Optics

The term fibre optics dates back to Roman times; however, the first term was different, i.e. ‘telegraph optical’. It helped operators  transmit messages via passage of lamps mounted on towers. This was established in the 1790s by the brothers in France Chappe and great strides were made in optical science during the next century. The […]

Magnification is defined as the size of an image compared to the object’s size. In day to day surroundings, Mirrors and lenses can magnify images. To calculate magnification given by a lens can be calculated with the help of the formula given below.           Magnification= Image height/ Object height Because magnification is

Telescopes are an indispensable tool in the study of astronomy. It allows the user to magnify and observe distant celestial objects in the sky. The first-ever telescopes are believed to be invented in the Netherlands with a simple glass lens.  Galileo is often credited for the discovery of the telescope. He created several designs of

A compound microscope is used to magnify samples that are not easily visible to the human eye. The magnification power of a microscope depends on the lens, which can be either 400X, 1000x or up to 1500X. Such high magnification is achieved by the use of twin lenses. A compound microscope is used in schools,

Lenses are transmissive optical devices used primarily to focus beams of light by means of refraction. A commonly used lens is a small piece of transparent material. In the case of composite lenses, a combination of several ordinary lenses arranged along the common axis is seen. The nature of a lens is opposite to that

A simple microscope is made with the use of a magnifying lens. A “loupe” is the lens that is used to see through a simple microscope. The most common simple microscope is the magnifying lens.  Simple microscopes are used in biological labs and dermatological investigations as a part of experiments by students and are extensively