Introduction A lens is a homogeneous optical device having a transparent medium through which light is refracted they are used to converge and divert light. One or both covers collect light from one side and change its convergence to reflect the other. The word lens comes from the Latin word lentil because the shape of […]
Concave vs convex lens: Definition, Types, and differences Read More »
Introduction There are various species of animals in this world. Every animal has a number of organs that collect special stimuli from the environment and transmit them to the brain through specific nerves. All these organs are called sense organs. The five special sensory organs of the human body are the eye, ear, nose, tongue,
The human eye: structure and function Read More »
Introduction Surface chemistry is a branch of physical chemistry that deals with the study of phenomena that occur at the interface. The following article is all about such phenomena that is adsorption vs absorption and their reactions. In daily life, various chemical reactions occur on the surface of the solids like corrosion occurs as the
Adsorption vs absorption: Definition and differences Read More »
Introduction Why do stars twinkle? Sometimes such simple questions arise in our minds. Well, if we describe this in scientific terms then the twinkling of the star is a consequence of the turbulence of the Earth’s atmosphere. It is one of the many features of Stellar scintillation seen by the human eye. Stellar scintillation is
Why do stars twinkle? Read More »
Introduction Our body is made up of several different types of cells. These cells continuously do different metabolic processes. As a result of these processes, energy is produced, and with many essential products, some by-products or waste products also generated continuously. Like carbon dioxide produced by the metabolism of sugars. Urea, ammonia, and uric acid
Kidney structure and function a detailed study Read More »
Introduction Earth is the only planet so far known where life exists. Life on Earth is in the form of plants, animals, and microorganisms. All these living entities do certain biological activities to keep themselves alive and to keep the cycle of life continuing on the earth. These processes or activities are nutrition, respiration, transport,
Photosynthesis vs cellular respiration Read More »
Introduction The pitcher plant belongs to the genus Nepenthes. This plant is carnivorous in nature as it attracts and traps invertebrate prey using nectar-secreting pitchers. Thus pitcher plants come under carnivorous plants sometimes called insectivorous plants. So let us discover what is a pitcher plant and how it traps insects. Why some plants are carnivorous
What is a Pitcher plant? Structure and hunting method Read More »
Concept of photosynthesis Photosynthesis is a physiological process of plants. In 1898, scientist Barnes first used the term photosynthesis. Photosynthesis comes from two Greek words ‘photo’ means light, and ‘synthesis’ means, synthesize, or produce. Therefore, photosynthesis is the synthesis or production of any element with the help of light. In photosynthesis, solar energy from the
What is the definition of photosynthesis? Read More »
Introduction Vitamins are organic compounds required by our bodies in a very small amount. These help in the normal functioning of the body and maintain optimum growth and metabolism. Vitamins act as a catalyst or as a coenzyme. Interestingly one substance that acts as a vitamin in one species does not function as a vitamin
What are vitamins? Classification of vitamins & vitamin sources Read More »
Introduction Sometimes the vision becomes blurred due to the refractive defect of the eye. A refractive defect means the inefficiency of the lens of the eye to bend light correctly which results in blurred unclear vision. The current article is about Myopia vs Hyperopia. There are three common defects of vision Myopia near-sightedness or short-sightedness
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