Optics

Nature has endued the human eye (retina) with the sensitivity to sight magnetism waves during various electromagnetic spectrums. The radiation happiness to the current region of this spectrum (wavelength of concerning four hundred nm at 750 nm) is named light. It’s primarily through light and, therefore, the sense of sight that we all know and […]

If you have ever been trekking, you must have carried polarised sunglasses with you as well. Thus, when the weather is sunny, you can’t help but notice the crystal clear reflection that appears on a lake. These reflections are polarised. However, when you see it via your sunglasses, you will see these reflections are gone.

The blue sky is one of the most commonly seen sights on Earth. It is generally defined as the sky in the daytime that appears blue because of Rayleigh scattering.   The blue colour of the sky is also referred to as cyan, azure, cerulean, and navy. The blue colour of the sky varies from

Vision problems are common. In fact, they are so common that around 2.2 billion people globally have at least one kind of eye defect. Whether it’s myopia or hypermetropia, people of different ages have these eye defects. In most cases, eye defects like myopia or hypermetropia are cured by vision correctness in the form of

Image formation is a broad concept covering different kinds of lenses, mirrors, and surfaces. Understanding how an image is formed through instruments like lenses and magnifying glasses is vital to get introduced to reflection and refraction. Moreover, it also acquaints us with the image formation on different types of mirrors. In this article, we will

A person sees lovely things all around them each day. People do not just see things; they notice, analyse and afterwards, humans either continue to stare or choose to overlook them. What gives us the ability to observe the world around us? What is the human eye that makes it so magnificent and necessary? However,

Refraction at spherical surfaces and lenses can be easier to understand if we explore each term individually. Now, there are numerous phenomena of refraction that occur in nature; some of them include the glare of stars, pre-sunrise, post-sunset, etc. The ability of lenses to converge or diverge the rays of light passing through them is

Light is fascinating to observe and understand. When light passes through a medium, several phenomena take place. One of them is Refraction. Refraction refers to a change in the direction of light when it travels from one medium to another. Refraction is dependent on the refractive index.  The Refractive index can be defined as a

The eyes are the most crucial organ of the human body. All the things in our surroundings are only visible because our eyes see them. Our eyes are connected with our brains. The nerves present in our eyes first see the pictures, and then our brain understands them. The actual part of understanding the image

Also known as Huygen-Fresnel Principle, Huygen’s Principle was introduced by Dutch mathematician, physicist, and astronomer Christiaan Huygen in 1690. The theory has been of significance in understanding a variety of optical phenomena.  According to Huygen’s Principle, each point of a wavefront can be considered a secondary source of light, and these points emit spherical wavelets