What is an achromatic aberration? A chromatic aberration is the inability of a lens to focus different wavelengths on a single focal point. This phenomenon happens because of the fact that the refractive index of a material depends on the wavelength. That is why materials are called dispersive, meaning their

Introduction to wave plates “Wave plate is an instrument (Optical device) that has the ability to change the state of light when light is incident on it.” These plates are made from different materials most common of which are birefringent material (plastic) Wave plates either half or quarter plates have

Crystals are categorized as both isotropic and anisotropic depending upon their optical behavior and whether or not their crystallographic axes are equivalent. All isotropic crystals have identical axes that similarly engage with light, irrespective of the crystal orientation with admire to incident light waves. Light getting into an isotropic crystal is refracted at a regular attitude and passes through the crystal at a fixed angle, having constant speed without being polarized with the aid of interaction with the electronic components of the crystalline lattice. On the other

Inroduction to refractive index calculator The refractive index describes the change in speed of light as it enters from air into the material under observation. Therefore, the refractive index is a material property and everything we see around in our daily lives is composed of different materials. All of the

What is blackbody radiation? Any object that is composed of subatomic particles emits electromagnetic (EM) radiations when it is above the absolute temperature of 0o Kelvins (which corresponds to approximately -273.15o K). This emission of EM waves is termed thermal radiation and it represents the internal energy converted by the

Introduction to Light Emitting Diodes (LEDs) All semiconductor diodes available today are used in some capacity, but LEDs are the most widely used of them all. The visible light or the invisible infrared light of a light-producing diode may be transmitted one-sidedly (biased). There are several uses for LEDs that

This post outlines the latest trends in solar cells. As we know that with the passage of time, the world is moving towards solar energy as fossil fuels are becoming rare. Solar energy harvesting from solar cells is a very cheap way of producing electricity. Due to underlined benefits of