Archives March 2013

Bank Robbery is very common now-a-days. Some people do such crimes just for sake of money. It was July 15, 20.........when my father had to go to the bank in order to withdraw one of his fixed deposits. He decided to take me along as my school was closed for summer vacation. It took us about twenty minutes to reach the bank. My father told me to be seated on the sofa lying near the door and himself proceeded to the "FIXED DEPOSIT" counter. People all around were busy in depositing and withdrawing money. Suddenly a car came and stopped near the entrance of the bank. In few seconds, four masked men with weapons entered the bank. They hit the security guard badly and after that took positions and warned the people of dire consequences if they tried to move. They told everyone to raise hands and turn their faces more...

A Visit to Hospital' gives a feeling of shock. The word 'Hospital' creates an atmosphere of pain and sorrow with terrible feeling in the mind. Admission in the hospital means something very serious to physical body of the person. I cannot see the suffering persons. It makes me very sad and nervous so I hesitate to go to a hospital. Only my ill-luck forced me to this  visit. One evening I was in kitchen garden. I was busy in my hobby. Suddenly I heard about the accident of my friend, Rajan. I came to know that he had admitted to Holi Family Hospital. I atonce rushed there to see my friend with my mother. My mother knew my friend very well. She also wished to go with me. When I reached the hospital, I went to the emergency ward. I could find him there. I went there. He was being more...

The armament race poses a great threat to world peace. Almost all the countries have been involved in the arms race. At the time of the Second World War USA was? the only country Which had developed the atom bomb which it used with devastating effect to end the war. By and by other countries like Great Britain, China, Russia, and France also developed the bomb. The-developing nations are not far behind. They are also joining this race. India, a peace loving country, was also compelled to do so in 1998 to assure its people regarding national security. This race for armament has created a serious challenge to international stability. It has exposed the whole , world to great danger. Countries remain in a constant state of preparation for war. There is also a danger of nuclear device exploding and an accidental war erupting because of human or mechanical error. more...

An ostrich is the largest bird in the world, but it cannot fly. Actually, it has strong legs with which it can run very fast, as fast as 96 kilometres an hour. An ostrich can be as tall as a horse and weighs up to 135 kilograms. It is generally found in Africa. It can be seen in the company of large animals. An ostrich makes its nest in the warm sand. A nest can have as many as fifteen eggs. An ostrich egg is quite large, as large as two dozen chicken eggs put together. The baby ostriches hatch in about six-seven weeks' time. They are of the size of a hen when they are born. The young ostriches can eat plants, seeds, fruits and insects. They also eat other ostrich's eggs. An ostrich is very stupid too, as it can swallow many other things such as nails, buttons more...

Science has brought many wonders to this world. It has changed it completely Television is one of the wonders of science. It is the latest scientific invention in the field of audio vision. In an age of science and technology, television  has created a niche for itself in the hearts of people of all age-groups and sections. Hardly is there any home without  television set. It is needed by all-the rich and the poor and the young and the old. The television is an improvement on the radio. We can see the face of singer or speaker on the screen of television set. Television has become very popular. People see all important programmes in TV sitting at home. Lessons are telecast for the students of middle classes and senior secondary classes twice a day in TV. The morning lessons are meant for the first shift and day shift schools. The more...

China's Grand Canal, completed in the thirteenth century and stretching almost 1,200 miles (1,930 km) from northern Beijing to Hangzhou in the south, is the oldest still in use today. Although the most ancient part of this waterway dates as far back as 486 B.C.E, canals had been in use for irrigation and transportation for centuries prior to this. The earliest evidence suggests that artificial waterways were excavated and in use across Iraq and Syria by 4000 B.C.E. The first British canal, the Fossdyke, was built by the Romans, but it was not until the birth of the Industrial Revolution in the mid-eighteenth century that the construction of a canal network began in earnest, eventually totalling almost 4,000 miles (6,440 km). Canal systems also proliferated throughout Europe and the United States, with horse-drawn barges providing the principal means of cheap transportation for coal, cotton, and other commodities. The advent of more...

"The electron... crystallizes out of Schrodinger's mist like a genie emerging from his bottle." Sir Arthur Eddington, Nature of the Physical World Jean-Antoine Nollet (1700-1770) was the first professor of experimental physics at the University of Paris. At that time electrostatics was a topic of great interest. Nollet's electroscope was designed to detect and crudely measure electric charge. An insulated charge sensor protruded into a cylindrical container, the ends of which were closed by two flat glass windows. The bottom of the sensor (the part in the cylinder) was fitted with two leaves of metal foil (usually gold). If the sensor's opposite, extruding end was brought into contact with a negatively charged body, electrons were repelled into the two leaves and they separated. The degree of separation was a function of the size of the charge. A second negatively charged body contacting the extruding end would cause the leaves to more...

Last year we played a match which I will long remember. It was played at the invitation of famous cantonment Cricket Eleven. We reached the Cantonment Club. George, the captain of the other team shook hands with our captain. He led the party to the field. Our captain lost the toss. We then took our positions in the field. Near the stumps lay the red ball. The batting began. A stout young man came in to bat. He played for a few minutes only and was then caught. One wicket was down with no runs. We were also very excited. Was the opposite team going to be defeated so easily? Presently, the second batsman appeared. His very first stroke showed him a skilled player. His batting was firm and swift. He began piling up runs. We did not lose heart. We changed our bowlers, alternating fast with slow ones. At more...

Richard Buckminster Fuller (1895-1983) was a true polymath, dipping into fields as diverse as poetry and architecture. It is for the latter that he is best known and, in particular, for the geodesic dome. Many geodesic domes have been built around the world, including the Epcot Center in Disneyworld, Florida, and the Eden Project in Cornwall, England. Geodesic domes come in many shapes and sizes, but they're basically a sphere made from self-reinforcing triangular sections. The dome has a number of advantages: It maximizes volume to surface ratio, it is very strong for its weight, it is quick to assemble, and it is aerodynamic, allowing it to stand up to strong winds. Although Fuller received the U.S. patent on the concept, he was actually building on earlier work by the German Walther Bauersfeld, who constructed a planetarium along these principles in 1922. Fuller's dome had a remarkable renaissance in 1985, more...

"Types of machines... came to my notice offering possibilities for types of marvelous control" Al-Jazari, Book of Knowledge (1206) Islamic scholar AI-Jazari (1150-1220) lived in what was northern Mesopotamia—today's northeastern Syria and Iraq. A brilliant inventor, he made one of the most significant contributions to human engineering in 1206 by devising the world's first crankshaft. This conceptually simple device converts rotary into reciprocating motion, and vice versa, but it is now used in a huge number of modern machines, including automobiles. Put simply, the Industrial Revolution could not have happened without it. The crankshaft is perhaps most commonly recognized today in modern motor engines, and is among AI-Jazari's more famous inventions. In today's cars it receives force from firing pistons that move in a linear fashion back and forth and, through movable bearings, rotates around its axis, thus converting the pistons' energy into rotation output for the wheels. Al-Jazari's original more...