Optics

A number of optical instruments have been designed using the concept of reflection, refraction, lenses, prisms and many more. Among which the telescope is one. The first practical telescope was invented at the beginning of the 17th century with the use of glass lenses in the Netherlands.  A telescope is a device that is used

First of all, we need to know about ultraviolet radiation. What is ultraviolet radiation? And what is the role of ultraviolet radiation in the industrial sector? Ultraviolet radiation is the radiation that comes from the sun. It is a type of electromagnetic radiation with a frequency of 30PHz and a wavelength from 10 nm to

When the angle of incidence exceeds a certain limiting angle, known as the critical angle, total internal reflection occurs. The two prerequisites for total internal reflection are as follows: The angle of incidence in the denser medium must be greater than the critical angle for that pair of media. Before reaching a rarer medium, a

Introduction Internal reflection is a part of optics that explains the concept of travelling of light. When a light beam or ray travels from an optically denser medium to a rarer medium or less optically denser medium, internal reflection occurs. In such a phenomenon, some portion of the light gets reflected back into the same

Microscope is a piece of scientific equipment that magnifies microscopic items that can’t be seen with the naked eye. Furthermore, we can see numerous species, such as a cell, the structure of dust particles, and so on, using a microscope. A simple microscope is a laboratory tool used in a variety of branches of study

To understand the resolving power of telescopes and microscopes, let us first understand the meaning of resolving power. The resolving power is an optical instrument’s capacity to make individually identifiable figures of two objects put at a little angular distance from each other. If the two objects are positioned near each other being out of

Resolving power of a microscope: Definition If two points of an object are so close that their diffraction discs overlap each other, we cannot see those points separately. The resolving power of a microscope tells us how far apart points can be seen separately. Resolving power of a microscope is a function of refractive index.

In this article, we will discuss in detail about the resolving power of the telescope and the microscopes. Resolving power is defined as the ability to see distant objects; it is known as the inverse of the distance between two objects that can be resolved when viewed by an optical instrument.  For telescope and microscope,

Amateur astronomers utilise several multiple kinds of telescopes. They normally employ a refracting as well as a reflecting telescope. The two most frequent optical telescopes for studying and observing the cosmos are these two. The manner in which they’re classed is determined by how the image-picking mechanism within the tube operates. History of Reflecting Telescope