Monday, 8 December 2014

Glass Nanobots-new invention in Science

Glass Nanobots Absorb Toxins

                  Ananobot particle made from glass is being developed that can absorb pollutants from contaminated water.
The glass particles act like sponges by attracting and binding contaminants to themselves and expanding eight times in size during the process.
But unlike a sponge, these nanobots are hydrophobic, meaning they don't absorb water.
Scientists claim this new technology could be used to clean petroleum spills or other hazardous chemicals from our waterways. After the particles are dropped into the water, they collect pollutants and then rise to the surface when fully expanded. The particles are then skimmed from the surface, cleaned and placed back into the water to repeat the process.

Water Drop Lens

      Physicist and inventor, Bruno Berge, has created a liquid optical lens.Using a process known as electro-wetting, a water drop is deposited on a metal substrate and covered by a thin insulating layer. When a voltage is applied to the metal, it modifies the angle of the liquid drop.
The liquid lens is comprised of two liquids, water and oil, one is a conductor while the other is an insulator. A variation in the voltage causes a change to the curvature of the liquid to liquid interface, which changes the focal length of the lens.
           The use of liquids allows for low cost construction. There are no moving parts and electrical consumption is extremely low. The lens has a large inverse focal length range, quick response, high optical quality and can operate in a wide temperature range.



  Sumathi M
  Faculty in Science
  BIS

Thursday, 4 December 2014

The importance of ABACUS in learning



ABACUS
It is difficult to imagine counting without numbers, but there was a time when written numbers did not exist. The earliest counting device was the human hand and its fingers, the feet and toes. Merchants who traded goods not only needed a way to count goods they bought and sold, but also to calculate the cost of those goods. Until numbers were invented, counting devices were used to make everyday calculations. The Abacus is one of the many counting devices invented to help count large numbers. The person operating the Abacus performs calculations in their head and uses the Abacus as a physical aid to keep track of the sums, the carry’s, etc.
Abacus is a Latin word that has its origins in the Greek words abax or abakon (meaning "table" or "tablet"). The Abacus ( plural, abaci)also called a counting frame is a calculating tool that was in use centuries before the adoption of the written modern numerical system and is still widely used by merchants, traders and clerks in Asia, Africa and elsewhere. Today abaci are often constructed as a bamboo frame with beads sliding on wires, but originally they were beans or stones moved in grooves in sand or on tablets of wood, stone or metal. The user of abacus is called an abacist.
Abacus is already becoming a popular trend in countries like Japan and China, is fast catching up in India as well. A concept which has been around since centuries, the Abacus is becoming a popular mental development tool once again. Around the world, abaci have been used in pre schools and elementary schools as an aid in teaching the numeral system and arithmetic .Capturing the interest of your child by using colourful beads, the Abacus employs these beads making the child use them as numbers and produce results by manipulating the beads. Abacus education not only helps your child improve calculation but also helps the child visualize the problem and then work out the result. Having been around since ages, the Abacus is a universally accepted tool. Abacus coaching can be started with children starting kindergarten till they are about 4 years old, although there is no prescribed age to begin with this form of education.
It develops children concentration, thinking, observance, reading and writing abilities. Motivation is something that pushes everyone to their endless limits. Once you have something to look up to, let your life take you up the toll. Abacus gives you motivation, self confidence and even better, makes you much more active, attentive and brilliant. Usually, the left-side of the brain is used by an everyday human being. Science has proved that the continuous use of abacus is helpful to develop the unused right-side of your brain. Think about how much you can achieve if you started to utilize more than what you are now.
Children using Abacus are found to be superior in the accuracy of their memory and the number of digits they are able to memorize when compared with non-abacus learners of the same age. This is because the abacus children, place numbers on the abacus image in their head as they mentally calculate with abacus method. It improves the image memory. It becomes easier for the children to do mental maths quickly with accuracy. The accurate and rapid calculation leads to better marks in mathematical calculations. In addition, a positive effect is seen as the children are quick in calculating fractional numbers too.
At the end of this programme, child can do addition, subtraction, multiplication and division of large numbers with greater speed than the calculator and computer. Basic mathematical operations like addition, subtraction, multiplication and division are solved by simple movement of beads in this instrument. This helps the student to develop a pictorial representation of the problem in the brain and by regular practice, the brain learns to solve the problem without actual use of any aid including the Abacus. The students thereby develop an exciting photographic memory. Nowadays, many of the Educational Institutions around the world are incorporating Abacus in their regular syllabus with the aim of sharpening the basic mathematical skills in students. Extensive research on the subject has consistently proved that regular practice in Abacus results in a more proficient and sharper brain.  Like any other organ of human body, our brain also needs regular exercise to keep it fit and sharp but how do we exercise our brain?  Mathematics provides the ideal exercise for our brain. Mathematics is the logical application of mind to tackle a particular problem. More time spent with mathematics would invariably result in a well exercised and a sharper brain. This is simply the reason why a child strong at mathematics is able to tackle other subjects with relative ease.   But most children fear mathematics and often try to escape from the complexities of problem solving. This is where Abacus comes to aid. Abacus develops speed and accuracy in mathematics using very basic methods. This naturally develops aptitude and liking for Mathematics within a very short period.    With the growing of technology, most of the children are depending on calculators to solve even basic mathematical problems. On being dependent on electronic calculator, they are ignoring the opportunity to solve arithmetical calculation mentally or using mental calculator.
Children who learn the abacus generally achieve higher academic performance not only in arithmetic but also in all subjects because of the concentration. On solving arithmetical problem mentally, children become proud on his/her capacity, grow their confidence, dare to challenge with others, try to make himself/herself all rounder and be successful in all areas. In this competitive era, every kid needs a proper direction to dig out their hidden potential from himself/herself to be the best. Every parents hope that their children should be the best among others. In support with your view, abacus training is one of the best training to make your child brainy, talent and master mind. This training gives confidence to face competition exams. A slow brainy student also able to show performance more than earlier. Over all, to be the best, the basic needs are- master mind, memory, concentration and confidence : and all is included with abacus training.
In Tokyo on November 12, 1946, there was a contest between a Japanese postal official, Mr. Kiyoshi Matsuzaki, skilled in using Abacus and an American soldier using a calculator. The American representative using the calculator was Mr. Thomas Nathan Wood of the 20th finance disturbing section of General Mac Arthurs headquarters. The contest was held under the sponsorship of the U.S. Army newspaper, The Stars and Stripes. The soldier used the most modern electromechanical calculator available then but was convincingly defeated in four out of five contests. The remarks of the Stars and Stripes were as follows.“ The machine age tool took a step backward at the Emie Pyle Theatre as the Abacus, century’s old, dealt defeat to the most up-to-date electric machine now being used by the United States Government..... the Abacus victory was decisive”.

The remarks of the Nippon Times were as follows: “Civilization, on the threshold of the atomic age, tottered Monday afternoon as the 2,000 year old Abacus beat the electric calculating machine in adding, subtracting, dividing and a problem including all three with multiplication thrown in. Only in multiplication alone did the machine triumph....”

With Regards
Mumtaz Rahaiman
ABACUS Trainer
BIS