When a large –scale accident affects man and nature, we call it a disaster. This can occur without a warning. Natural disasters include floods, droughts, earthquakes, tsunamis, volcanic eruptions and landslides. Massive earthquakes hit Latur...

Relating Social Relations To Econmics

  Economics normally view development purely in terms of ideas and concepts like accumulation, Gross National Product, changes in occupational structure etc. These are the criteria the economists apply to measure development aiming at determining...

Anothe Scientific Breakthrough?

  The year 2009 would be remembered by the people of India especially the scientific community for the remarkable achievement of the Indian-American Mr. Venkatraman Ramakrishnan winning the Nobel prize for his pioneering studies on the structure...

Mrs. Kapur has a lovely garden at the back of her house. She has grown many beautiful plants and flowers in her garden. She loves to sit there in the evening, after her day’s work. One evening, after dinner, Mrs. Kapur was sitting in her garden....

Working of a Radio

Satellite radio stations broadcast signals from their earth to the satellites positioned in geo-stationary orbits above the earth. This covered the whole earth, while remaining stationary with respect to the land below. The enabled the satellite...

Taste defectives –tongue and nose

Teeth, tongue and saliva in the mouth help us to taste and digest food. Digestion begins in the mouth. The teeth break the food into smaller pieces. Food then mixes with saliva. Saliva is a liquid that is produced in the mouth and helps to soften...

Lava on cooling turns into rock

States matter Any thing that occupies space and has weight is called matter. In nature, matter exists in three states; solid, liquid and gas. They all occupy some space and have some weight. Anything that occupies space and has weight is called...

How does your house look like?

House is one of our basic necessities. It protects us from heat, cold, rain, wild animals and thieves. People living in different places build different types houses. The type of house a person builds depends up on the following...

There are around 9,000 different types of birds. All of them live in different places. Some live in deserts, some in open plains, some n high mountains and some in water. Among animals, only birds, insects and bats can fly. Birds are fastest among...

We should never burn dry leaves

We see many plants around us. They are of different shapes, sizes and colors. They are found in different places. Some are found on land and some on mountains some grow in water. Plants live in different surroundings. Over millions of years, they...

Food spoilage –monster microbes

Microbes are the little monsters that take us sick. However, not all microbes are harmful. Some are useful and help to keep our digestive system clean. For example curd contains good microbes and must e eaten everyday. Surprise your mother with...

Most of the plants grow from seeds. Plants bear flowers which develop into fruits. Inside fruits are found seeds. Some fruits have a single seed while others have few or many seeds. Every seed has an outer covering called seed coat. Each seed...

Water Supply Schemes

  BASICS OF THE WATER SUPPLY SCHEMES Actually wherever a water supply scheme is framed (scheme means a system to draw water from suitable source, treat it and then supply it to the consumers) a comparison is made between all the possible...

Temporal and spatial cohearance.

Temporal and spatial coherence   The electric field (associated with a wave) at a point changes in phase with time.  Let deltaphi be the phase change in a small interval of time deltat. is directly proportional to deltat, for any value of delta,...

Central nervous system

The central nervous system (CNS) consists on the brain and the spinal. It receives information on the various parts of the body, as well as the surroundings, through the nerves that connect all parts of the body. It processes the information and...

The inner is filled with fluid

Other than being organs for hearning the ears also help maintain the balanced of the body. Each ear has three parts –the external ear, middle ear and inner ear. The external ear This consists of the pinna and the auditory canal. The pinna, the...

polaroid

POLAROID   In 1982, W.B.Herapath,an English physical developed dichronic crystals of the organic compound quinie iodosulphate called herapathite.  Such a crystal completely absorbs one component of polarization and transmits the order with little...

Functions of blood

We can sum up the functions of blood as follows. a) We know blood transports oxygen and carbon dioxide, thus playing a vital role in respiration. We also carry dissolved food from the small intestine to the tissues, besides transporting hormones....

Blood circulation

The constant pumping action of the cardiac muscles keeps our blood circulation going. Put simply, the heart pumps oxygenated blood received from the lungs to the rest of the body, and deoxygenated blood from the rest of the body to the lungs. The...

The circulation system in human beings

Our circulatory system consists of the heart, blood vessels and blood. Together, these are responsible for the transport of materials to and from different parts of the body. The materials are carried by blood, an extra cellular fluid which flows...

Powered by CjBlog