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Octopus blood     Let us talk today about why the color of octopus’s blood is blue and what is the reason for it. After all, what is there in his blood due to which the color of his blood is blue?   Apart from humans, there are many creatures whose blood is red in … Read more

Physical world The correct concept of force is given by Newton’s laws of motion. We experience many forces in the micro world as well as in the macro world. Gravitational force and electromagnetic force are experienced in the physical world. Because the range of both of them is infinite. Whereas in the microscopic world, nuclear … Read more

Huygen’s Principle When we throw a small stone in a calm water pond, waves propagate around the rebound point. Every point on the surface starts oscillating with time. The photograph of the page at any given moment will show the circular rings above which the disturbance is maximum. Apparently, all the points in this type … Read more

Function of simple microscope     A simple magnifier or simple microscope has a converging lens of short focal length. To use this type of lens as a microscope, the lens is placed near the object at one focal length or less than the focal length and on the other hand the eye is kept … Read more

Human Eye       The human eye is a very valuable and sensitive sense organ. It enable us to see the wonderful world and colors around us. The human eye is like a camera. A real, inverted and small image is formed on the retina located at the back of the eye.   Accommodation … Read more

What is light  Light is a medium with the help of which we are able to see any objects. In the absence of light, we cannot see any object because when light falls on an object, it gets reflected and reaches our eyes, then we feel the presence of that object.   Reflection of light … Read more