YOU NEED:

• Two cardboard rolls from a paper towel roll
• A ruler

  Arrange the two cardboard rolls side by side and ,balance the ruler on top of the two as shown in the illustration. If you happen to rotate the rolls inward, as indicated the arrows, the ruler remains balanced. It may shift back and forth slightly but it remains balanced. Even though it may move backwards and forwards.  It however remains balanced. Rotate the cardboard rolls in the opposite direction. The ruler will slowly travel to one side till it falls off the rolls.                    HOW DOES IT WORK?        The action that you have just noticed is the result of merger of weight and friction. Take the case of the rolls rotating inwards. The moment the ruler moves a little bit to the left — its weight on the cardboard roll increases. This more...

YOU NEED:

• Two bolts

  This one  does not need any apparatus. This experiment  can be done in the head. Just imagine that  bolts are placed together so that their three dimensional spiral structures, called a helix, intermesh with, each other as shown in the illustration. Now move the bolts around each other in your mind. It will be similar to twiddling your thumbs holding each  head so as not rotate it. Move the bolts in the direction of the arrow. Will the heads i)                    Come close to each other ii)                   Move away from each other iii)                 Or be static? Solution : You will be surprised to learn that the answer is iii) .It is comparable to a situation where someone is  up an escalator moving downwards.

YOU NEED:

• A coke bottle
• Uncooked rice
• A pencil

Use the uncooked rice to fill a coke bottle tightly. Insert a pencil, a chopstick, or a rod along the neck of the bottle neck into the rice. You will find that when you lift the pencil, the bottle comes with it! Chances are that you may need to try several times before it sticks in the rice. Give the pencil a twist and you will be able to remove it from the rice with ease. This trick will work with any bottle or container as long as its opening has a smaller circumference like the coke bottle. The trick is of Indian origin where fakirs are known to push in a dagger into a bowl of rice. They then lift the knife with the bowl hanging from the dagger point. dagger point.                                       more...

YOU NEED:

• A cardboard tube
• A rubber band
• A piece of tissue paper
• Grains of uncooked rice

  This is one riddle you need to take a look at, The question is why doesn't the tissue paper break even you press down on it? Take the square of tissue paper and attach it to one end of a cardboard tube using a rubber band. Now hold the tube vertically, so that the mouth of the tube is towards the top. Now fill the tube with uncooked rice. You would think that by pressing down as hard as you can with your index finger on top of the rice, you will be successful in breaking the tissue paper at the bottom. The fact is you can't. HOW DOES IT WORK?       Rice grains are hard and when bunched together to slip around each other. Now when more...

YOU NEED:

• Two books of similar size and number of pages
• A table

Are you aware that books can be turned into very strong magnets. Perform this experiment. The books can be either hard covers or paperbacks. Take the two books and place them on a table with their front edges touching each other. Think of the books as if they are two halves of a deck of cards that has to be shuffled together. Let your thumb to run along the pages slowly, allowing them to interlace thoroughly. Once you have shuffled the pages, bring the books as close to each other as possible. Dare somebody to hold the spines of the books and pull them apart. He will fail to do it.    HOW DOES IT WORK? Some friction is produced between any two pages if they are in opposite books. The effect more...

YOU NEED:

• A match box
• A coin
• A pencil or a pen

  Position an empty match box vertically and push in a coin between its cover and box which holds the match sticks as in the illustration. Catch the box in you left hand. With a pencil or the pen, hit lightly on the top end of the box. The pencil must simultaneously tap the two corners indicated by arrows. The coin will rise slowly through the box until emerges at the top of the box even as you continue hitting the box.

“A good teacher must know how to arouse the interest of the pupil in the field of education for which he is responsible. He must ™"1 himself be a master in the field of education and be in touch with the latest developments in the subjects, he must himself be a fellow traveler in the exciting pursuit of knowledge."                                                                                                                                —Sarvepalli Dr. Radhakrishnm   Sarvepalli Radhakrishnan was born in Tirutani on September 5,18SS inlay poor brahmin family. His father Sarvepalli Veeraswami was employed on a mat salary in the zammdari. His mother's name was Sitamma. It was difficult f« | Radhakrishnan's father to educate him with a meager income and a large family tab care of. Radhakrishnan went through most of his education on scholarships. Bill initially went to school in Tirutani and then to the Lutheran Mission School in Tile for High School. In 1900 he moved to more...

"Lal Bahadur Shastri was born near Varanasi in Uttar Pradesh. He served as Prime Minister of India from 1964 to 1966. A follower of Mohandas K. Gandhi, he was imprisoned several times by the British for nationalist activities. When India achieved independence (1947), he became a minister in the State government of Uttar Pradesh, and he later served in the federal cabinet as minister of transport(1952-1956),industry (1957-1961) and home affairs (1961- 1963). Shastri became Prime Minister on the death of Jawaharlal Nehru ill 1964. The principal event of Ills tenure was the undeclared war with Pakistan over the Rann of Kutch that began in April 1965 and subsequently spread to Kashmir. He died immediately after signing a Soviet-mediated ^no-war" agreement with Pakistan in Tashkent, USSR, in January 1966." Lal Bahadur Shastri (born 1904) succeeded Jawaharlal Nehru as Prime minister of India in 1964. Though eclipsed by such stalwarts of the more...

"Between my past, the present and the future, there is one common factor : Relationship and Trust. This is the foundation of our growth."                                                                                                                 —D. Ambani   Mr. Ambani was born in Chorwad, a village in Saurashtra, Gujrat. When he was 17, he went to Aden (now part of Yemen) and worked for A. Besse & Co. Ltd.. the sole selling distributor of Shell products. He returned to Mumbai in 1958 and started his first company. Reliance Commercial Corporation, a commodity trading and export house. In 1966 as a first step in Reliance's highly successful strategy of backward integration he started the textile mill in Naroda, Ahmedabad. In 1975, a technical team from the World Bank certified that the RIL textile plant was "excellent by developed country standards." In 1977, the company went public.  Dhirubhai Ambani - Entrepreneur who built up the only Indian business to feature in the more...

Maulana Abul Kalam Azad ranks together with Mahatma Gandhi and Jawaliarlal Neliru as one of the foremost leaders of the Indian National Movement. An erudite scholar of Islamic theology, he had a strong intellectual bent of mind and an inborn flair for literary writing. Making his debut on the Indian political scene as a young journalist with strong Pan-Islamist views, Azad Grew over the years into a front-rank Indian nationalist who steered the destiny of the Indian National Congress as its President twice, first in 1923 and from 1940to 1946 subsequently. Born in 1888, Firoz Bakht (of exalted destiny), commonly called Muhiyuddin Ahmad, was only two years old , when his parents settled at Calcutta; his father, Maulana Khairuddin, became famous here as a spiritual guide. Till in his teens, Muhiyuddin used the pseudonym Abul Kalam Azad acquired a high reputation for his writings on religion and literature in the more...