H.sapiens, Sorghum River Mammoth, African Elephant Image: Asiertxo The largest elephant that ever lived was huge, taller than your two stories Mayfair flat and almost as tall as the average telephone pole. Evolved from...

NUTRITION IN PLANTS AND ANIMALS All organism need energy to perform various processes of their lives. Energy is necessary for them whether they are working or at rest. We require energy even during sleep because a number of biological activities...

Gravity and anti gravitation Gravitation is nothing but a force commonly known as "gravitational force". A body attracts another body if they are having a potential difference; potential difference is also a form of energy. If both the potential...

Collision What happen when two electron collide with each other with the velocity of light? Electrons will not travel with the velocity of light. Only light travels at that speed but it not required dat electrons travelling with velocity =c....

Hawking radiation As we know, a particle-antiparticle pair is sometimes created near the event horizon of a black hole. Why is it that the antiparticle falls into the black hole and the particle moves away from it? What is the determining factor...

Definition of Force. Force is some natural phenomenon that changes the state of the motion of the body that is it accelerates the body. Now let us define a unit of Force arbitrarily (e.g. a standard spring being stretched 1 cm under elastic limit...

What is randomness? I want a good physical understanding of randomness. Is there something really random? Classically when we say the event is random. We usually do so because we don't know the exact information. Are we known that there was a...

Matter destroyed or converted. We know that matter is anything that has "mass" and occupy space. Now according to E=mc2, mass can be converted to energy and energy can also be converted to mass. If we destroy some mass, doesn’t it conflict with...

Gravity Einstein is a man of imagination. He always wants to imagine the universe as he thinks. His universe is completely different and he was not able to accept other's ideas which will not coincide his own. I would like to discuss more about...

Light Velocity There is a postulate that says that all bodies are travelling through the dimensions of Space and Time at light speed. Hence light speed is a limit, and your movement in one specifies dimension is getting faster, the speed on other...

About 5000 years ago, a great civilization arose in the valley of the five rivers-the Punjab. It lasted for about a thousands years. Then it lay buried under layers and layers of the earth for century after century. Nobody knew anything about it...

Black holes By quantum mechanical treatment one can show that even in vacuum their some energy exists. Actually a pair of virtual form and annihilate each other. but in the event horizon, there is a possibility that one particle will fall & lost...

Light on refraction What happens to the wavelength and the frequency of light on refraction? Compton Effect in light which dealt with collision between photons and electrons provided the energy was in the right range. In the collision between...

Difference between an electron and beta particles Electron is subatomic particles that are they are one of the constituent which atoms are made of. For any atom you'd find electron revolving around it as you may say.. Beta particles are...

CONTROL AND COORDINATION Living organisms depend upon their surrounding or environment. They respond and react to their environment. Conditions like chemical, thermal, electrical, photic, etc. in the environment always keep changing. To keep...

HUMAN REPRODUCTIVE SYSTEM Man is unisexual. There is a distinct sexual dimorphism. Males can be easily distinguished from female by many character, such as physical standerds, externals genetial organs and accessory sex characters. Human...

GENERAL PRINCIPLES OF EXTRACTION OF METAL All the materials found in the earth are comprosed of element. There are about 112 element known which constitute the entire matter on the earth. Therefore, the elements are regarded as the building blocks...

ELECTRONEGATIVITY The tendency of an atom in a compound to attract a pair of bounded electron towards itself is known as electronegativity of the atom. It is important to note that electron affinity and electonegativity both measure the electrons...

Our bodies are controlled by the nerves from the brain. The nerves from the brain cross over at the level of the neck and go to the opposite side of the body. The right half the brain serves the left half of the body, and voice versa. In the case...

The area from the Arctic Circle to the North Pole is called the tundra. It consists of the treeless, icebound plains of Canada, Europe and Asia. The inhabitants of Northern Canada, Greenland and Alaska are called Eskimos. The Lapps live in those...