Found 30 Articles for Optics

Different Optical Instruments

Praveen Varghese Thomas
Updated on 24-Jan-2023 12:08:53
Introduction Optical instruments are devices that are used for the enhancement of the images of the object. Anything as simple as a magnifying glass fitted with a convex lens is also an optical instrument. These days we have even complex combinations of lenses that use a very basic phenomenon of optics but have beautiful applications. Through this article, we shall learn about its significance, types, and how they are used in various areas of research as well as in day-to-day lives. What are Optical Instruments? Optical instruments, or can be called just ‘optic’ in short form, are the devices ... Read More

Difference Between Light Microscope and Electron Microscope

Praveen Varghese Thomas
Updated on 24-Jan-2023 11:26:52
Introduction With help of our Eyes, we can see the beautiful world around us. This happens due to the light rays. The light rays fall on any object and get reflected by it. These reflected rays fall on our eyes. The eyes have many parts like cornea, aqueous humor, and crystalline lens. The light from here in the form of electric signals moves towards the brain through the optical nerve. But there are certain objects which we can’t see clearly with our naked eyes. We find it difficult to see distant planets and stars clearly with our eyes. Also, small ... Read More

Determination of Focal Length of Concave Mirror and Convex Lens

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Introduction The distance between an object and the mirror is subject to measure by applying different theories of mirrors and lenses. The law of reflection is one of the essential rules to measure the focal length. In this situation, where the image is formed by the consistency of a surface’s reflection due to the inside curved of a spherical mirror, it will follow the law of reflection of light. In this tutorial, information regarding concave mirrors and the convex lens are subject to discussion. Information about Concave Mirror A reflecting surface of a spherical mirror is curved from the inside ... Read More

Difference Between Simple and Compound Microscope

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Introduction Too small objects that are even hard to see with naked eyes, to see them microscope is needed and it is used for that purpose. It is a very important part of science, called Microscopy. It defines a study or investigation of small objects or structures that is through a microscope. There are different types of microscopes, however, the main two types are simple microscopes and compound microscopes. One is for simple uses and the other one is used for professional purposes only, respectively. What is a Simple Microscope? Figure 1: Visual representation of how a simple ... Read More

The Lens Makers Formula

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Introduction The lens maker’s formula is utilized by the lens manufacturers and is used to make lenses of a certain extent of power from a glass of distinct refractive index. It helps the lens makers to derive the necessary data about the curvature that is required to manufacture a lens of a particular focal length in association with the material of a certain refractive index. This formula uses multiple sign conventions which are crucial to set up various geometric relations. This formula is used in the cases of concave and convex lenses alike. What is the Lens maker’s Formula? ... Read More

Total Internal Reflection

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
In physics, total internal reflection is regarded as a complete reflection, associated with a ray. A particular medium such as glass or water is required for the reflection of a ray. The ray reflects from a surrounding surface to the medium. In case of greater value of the angle of incidence, a certain limiting angle is found to have formed. This limiting angle is known as the critical angle. The sparkling diamonds and mirage are real-life examples of total internal reflection. What is total internal reflection? Total internal reflection takes place at a time when a ray travels ... Read More

Toric Lens

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Toric lens comes with different focal lengths and optical power in 2 orientations that are perpendicular to each other. One surface of the lens has a shape like a cap from the torus, and the other one has a spherical shape. This toric lens behaves just like the combination of cylindrical and spherical lenses. The lenses that are made of RGP are more delicate than other lenses. The toric lenses that have markings of the six o’clock position are with asymmetrical dynamic stabilization and are vital for thinner and larger peripheral zone to be oriented for optimal interaction of lids. ... Read More

Simple Microscope

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Introduction In the laboratory, several scientific instruments are required to process the experiments. Among such scientific devices, the Simple microscope has been considered one of such instruments that are generally used in order to identify or see small objects that usually occur to be unseen by a naked eye. Based on this concept, the current tutorial will define a Simple microscope along with explain several parts of it as well. Simple microscope: Definition Figure 1: Simple microscope A Simple microscope has been considered the first microscope that is constructed in the 17th century by Antony van Leeuwenhoek. ... Read More

Resolving Power of Microscopes and Telescopes

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Introduction The resolving capacity of a particular instrument is very important as it allows the detailed analysis of a particular object. Resolution denotes the level of details that is observed by a microscope. It refers to the ability of a particular optical system to create distinguishable images of the objects which are separated by little angular distances. For microscope and telescope, the resolving power can be defined as the capacity of an optical instrument to recognize and distinguishes a certain distance between 2 objects. Resolving Power of Microscopes and Telescopes The resolving power of a microscope and telescope refers to ... Read More

Concave Lens

Tutorialspoint
Updated on 13-Oct-2022 11:19:47
Introduction In this tutorial, we will learn about concave lens. The image produced by the concave lens, the nature of the image formed, and ray diagrams related to the concave lens will be described in detail here. Before proceeding further, let's recall some of the important points related to the concave lens. A concave lens diverges the incident rays. The diverged rays meet at a virtual point called Focus (F1) that exists on the opposite of the lens. The distance from Focus (F1) to Optical Centre (O) is called focal length (f1). A principal axis is a straight imaginary ... Read More
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