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GENERAL KNOWLEDGE Pt. VI

• WHAT'S THE DIFFERENCE BETWEEN A LAWYER AND A BARRISTER?

A lawyer is a person who practises law; one who conducts lawsuits for clients or advises clients of their legal rights and obligations. A barrister is a legal practitioner whose main function is to practice advocacy in court. They often have less interaction with clients. Barristers spend their working hours in chambers where they prepare their cases.

• WHAT’S SPECIAL ABOUT THE KEW GARDEN?

Kew Gardens in Thames, London is best known for being the home of the Royal Botanical Gardens (now a world heritage site). Other points of interest-include the Kew Palace and the National Archives (previously known as the Public Records Office) The Kew Gardens is special because it is an important international botanical research and education institution with a staff of over 700 people.

• WHAT IS THE ‘COOL BIZ’ CAMPAIGN?

This is a campaign introduced by Japan. In order, to save energy, it asks office goers and politicians to remove their ties and jackets to minimise the use of air conditioners and thereby reduce consumption of electricity and also the emission of greenhouse gases. German Chancellor, Angela Merkel who is currently visiting Japan to discuss, among other things, ways to tackle global warming, had a taste of the 'cool biz' campaign when the Japanese Prime Minister Shinzo Abe informed her that his entourage wouldn't be wearing their ties to adhere to the 'cool biz' campaign.

• WHAT IS THE ORIGIN OF THE TERM POCKET MONEY?

Before the advent of pockets in shirts and trousers, money was kept in bags and sachets. Later, a smart tailor made a pocket on a garment and it became so useful, further innovations made a pocket suitable to safely keep money From then on, money kept in pockets for expenses came to known as pocket money

• WHAT IS ENTABLATURE?

It is the horizontal upper part of a wall or storey of a building designed on the principles of classical architecture. It is usually supported on columns, and consists of  three parts. These are the architrave, the lowermost part; the frieze, the decorative band in the middle; and the cornice, the crowning ornamental projection. Entablature was originally conceived by Vitruvius, an ancient Roman architect.

• WHICH IS THE WORLD'S FIRST AIR SHOW?

The world's first air show was the International Air Meet held at Rheims, Franceheld in 1909. India's first air show, AVIA-93 was held in December, 1993 in Bangalore. The world's biggest air show was the  47th Paris Air Show. However, the world's largest military air show  the RoyalInternational Air Tattoo (RAF Fairford, United Kingdom), held annually in July.

• WHAT IS A CIRCUIT FILTER?

A circuit filter is used in trading of shares in stock exchange. It's applied to all the shares, to supposedly safeguard the interest of general investors from the extreme volatilities in markets by preventing any unexpected fall or rise of share price in a single day beyond a limit. If the limit is crossed by any of the shares in a single trading day it is frozen for trade.

• WHAT IS THE GINI COEFFICIENT?

The Gini Coefficient is a measure of inequality of income distribution or inequality of wealth distribution. It is defined as a ratio with values between 0 and 1: the numerator is the area between the Lorenz curve of the distribution and the uniform distribution line; the denominator is the area under the uniform distribution line. Thus, a low Gini Coefficient indicates more equal income or wealth distribution, while a high Gini Coefficient indicates more unequal distribution.

• WHAT IS THE TRIPLE FINGER SALUTE?

The three-finger salute is used by members of Scouts and Guides organisations around the world when greeting other Scouts and Guides and at some ceremonies. The salute is made with the palm face out, the thumb holding down the little finger, and the fingertips on the brow. In computer parlance, the triplefmger salute refers to describe the three-key sequence — Alt + Ctrl + Del — developed by David Bradley This term became popular after IBM PC compatible users continually hold down these keys each time their computers froze or had other problems.

• WHAT IS REFERRED TO AS THE WELL-COME COLLECTION?

The Wellcome Collection traces The development of medicine through history and spanning several cultures. Located in central London, it is a combination of exhibitions, libraries and cafes where people can learn more about the development of medicine. Part of the Well-come Trust, it was founded by Sir Henry Wellcome, a pharmacist, entrepreneur, philanthropist and collector, who garnered  a unique collection of articles relating to medicine and health. Recently, a British heart transplant patient, Jennifer Sutton, donated her old heart to the Well-come Collection, after receving a new one.

• WHAT IS KNOWN AS THE BAUDHAYAN THEOREM?

Baushayan Sulv Sutra (1000 BC) is today known as the Pythogorus theorem, which states that in a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides. In Baudhayan theorem, this has been expressed as follows: in a Deerghchatursh (triangle), the chetra (square) of rajju (hypotenuse) is equal to the sum of squares of the parshvamani (base) and triyangmani (perpendicular line). It is amazing to note that the pythagorus theorem was known in our country as far back as 1000 BC.

• WHY IS THE NUMBER 1 NOT CONSIDERED A PRIME NUMBER THOUGH IT FITS THE DEFINITION?

The number 1, in fact, does not fit the definition of a prime number. A positive integer is called a prime number only if there are exactly two divisors of that number. Since 1 has exactly one divisor (which is 1 itself), it does not fit this definition. Another equivalent definition of a prime number is this prime number's only positive divisor should be less than 1 and itself. Again, 1 does not fit this definition either— there are no positive divisors of 1 which are less that 1.

• WHICH NATION HAS THE SMALLEST ARMY IN THE WORLD?

Vatican City, the world's smallest country, has the smallest army. This army of 110 men, is also known as the Swiss Guard. Last year, the Vatican celebrated the 500th anniversary of the Swiss Guard. The celebration commemorated the 150 Swiss Helvetian mercenaries who came to Rome to serve Pope Julius II, on January 22,1506. The mercenaries covered a distance of 723 km in 27 days to enter Rome from Bellinzona, Switzerland. Swiss Helvetian mercenaries, famous for their courage, die-hard attitude and loyalty to their employers, were part of the regular armies of various countries at that time. As allies of the Pope, they helped to shape Italy's destiny and thus they were granted the title ^Defenders of the Church's freedom' by the Pope. During the Sack of Rome on May 6, 1527, the Swiss Guard, comprising 189 personnel at that time, resisted a Spanish attack on Rome and the Vatican. But they had to retreat after suffering heavy casualties. Only 42 men survived the attack. However, the Guard was able to ensure Pope Clement VII’s escape to safety.

• WHERE WAS WINE FIRST MADE?

Wine is the fermented juice of grapes. Probably, the first people to make wine were Persian farmers living near the Caspian Sea. The Egyptians learned how to make wine from them as long back as 3000 BC. In the fourth century BC., the Greek conqueror Alexander the Great carried grapevines and the knowledge of wine-making to Central Asia. Roman invaders probably took vines to northern France and Germany in later centuries. Wine was common in the everyday lives of the early Greeks and Romans. It was important to their religious ceremonies. The God of wine was called Bacchus by the Romans and Dionysus by the Greeks.

• WHAT IS THE DIFFERENCE BETWEEN MARXISM AND SOCIALISM?

Socialism is a modern doctrine and is Western in origin, emerging with the development of industrial capitalism at the start of the nineteenth century. Socialism denotes a broad system of ideas. Marxism is a materialistic conception of history which seeks to explain the development of all societies and furthermore, make predictions about future social change. Marxists consider the material world, nature and society as constantly moving. Whereas, the socialists emphasise the organic unity of society. Marxists consider the material world as an integrated whole in which all things and phenomena are interconnected and interdependent. Whereas, socialists believe in equality and abolition of private enterprise. Marxism provides a scientific explanation of nature and society and hence, was a powerful instrument for revolutionary transformation. The society envisaged by socialists rests on certain values: redistribution of wealth to get rid of inequality, cooperative production to get rid of selfish competitors and new patterns of work and education to promote the growth of well-rounded individuals.

• WHAT IS A HYPERCUBE?

Hypercube is the generalization in n-dimensions of a square in two dimensions and a cube in three dimensions. A square has four vertices (22), a cube, 8 vertices (23). Similarly, an n-dimensional hypercube has 2n vertices. In the famous painting 'Christus Hypercubus', Salvador Dali depicted Christ crucified on an unfolded four-dimensional hypercube. Examining the shadow of a cube reveals a square within a square. Similarly, the shadow of a four-dimensional hypercube will be a cube within a cube.

• WHY IS THE ALPHABET WRITTEN IN A SPECIFIC ORDER?

The alphabet has often been described as an arbitrary collection of symbols representing an arbitrary collection of sounds. Its order is equally random. The word alphabet comes from alpha and beta, the first two words in the Greek alphabet.

• WHAT IS STEAMING DISTANCE?

Steaming distance is the shortest distance between two ports, which a ship traverses while sailing from one port to another. It need not be along a straight line as, due to various physical and political constraints, it may not be always be desirable to sail along a straight route.

• WHICH IS THE OLDEST CIVILIZATION IN THE WORLD?

This has long been a subject of much debate and to this day no one is absolutely sure which is the oldest civilisation. This is mostly because people cannot agree on the definition of the word civilisation. The most common definition of the word is 'an advanced state of development in human society, marked by progress in the arts and sciences, the extensive use of writing, and complex political and social institutions'. Mesopotamia is considered as the most likely answer to the question, based on archaeological evidence and the above definition. It is believed that Mesopotamian history starts from the emergence of urban societies in Southern Iraq in the 4th millennium.

• HOW IS A COUNTRY'S GDP MEASURED?

GDP or Gross Domestic Product is the monetary value of all the finished goods and services produced within a country's borders in a specific time period. GDP is customarily reported on an annual basis. It is the nation's broadest gauge of economic health. It includes all of private and public consumption, government outlays, investments and exports and imports that occur within a defined territory The most common approach to measuring GDP is the expenditure method: GDP = consumption + investment (govern- ment spending) + (exports - imports). Another way of measuring GDP is to measure the total income payable in the GDP income accounts. This should provide the same figure as the expenditure method. Another formula is: GDP = rent + interests + profits + statistical adjustments (like corporate income taxes, dividends, undistributed corpo-1 rate profits) + wages.

• WHAT IS SPECIAL ABOUT UNIVERSITY OF TOULOUSE?

University of Toulouse is one of the oldest universities of France and is located in Toulouse, a city in Southern France on the banks of the Garonne river. It was founded in 1229 AD as a result of the Paris Treaty marking the end of the battle between the Roman Catholic Church and its opponents. Foulques de Toulouse, the then bishop of Toulouse, played a major role in the setting up of the university. Now, the university has an enrolment exceeding 1,00,000, and is the second largest university in France. The sixteenth century philosopher and astronomer Bruno and the Chemistry Nobel Laureate Sabatier, and the artist Dulac were some of its most illustrious faculty members.

• IN ANCIENT TIMES, WHY WERE PIGEONS USED FOR SENDING MESSAGES?

Pigeons were used for sending messages not only in ancient times, but as recently as early the 1900s, during World War I. A particular breed of pigeons called homing pigeons are specially suited for carrying messages, because they possess the uncanny ability of flying back to their home over long distances at high speeds. According to some reports, a homing pigeon flew back to its home after flying over 1600 miles at the peak speed of 60 miles per hour. Exactly how such birds navigate themselves is still not clear. Scientists hypothesise that the pigeon uses a variety of sources like the direction of the Sun, Earth's magnetism, and odours associated with different places for finding its direction. Before the advent of telegraph, telephone and radio, using pigeons for sending messages was quite popular among the military, newspapers, and stock brokers. Such a messaging system was known as pigeon post.

• WHAT IS AN ATLAS CALLED SO?

Atlas is the term used to refer to a collection of maps, printed in a set order: world map, maps of the continents, each followed by maps of the several regions within that continent, and with an alphabetical gazetteer or list of place names, giving coordinates for various places, rivers, regions etc. The first use of the term atlas dates back to 1595 with the publication in Duisburg of the Atlas Sive Cosmographicae Meditationes de Fabrica Mundi Et Fabricati Figura by Gerard Mercator (1512-94). It was named after King Atlas, a mythical King of Mauretania in Libya, who was, according to legend, a wise philosopher, mathematician and astronomer and who supposedly made the first celestial globe. However, the more widely known Atlas is a figure from Greek mythology He is the son of the Titan lapetus and Clymene^or Asia), and brother of Prometheus. Atlas was punished by Zeus and made to bear the weight of the heavens and Earth on his back.

• WHAT IS THE ORIGIN OF THE TERM 'RULE OF THUMB' ?

One theory about the phrase's origin lies in the misplaced public belief that the English law allowed a man to beat his wife with a stick measuring no longer than his thumb. There was actually no such English law enacted at any time. This phrase has been in circulation since the 17th century This phrase commonly refers to any means of estimation based on a practical and ready method but not on scientific measurement. Another theory concerning the phrase's origin involves the numerous ways in which thumbs have been used for estimation. Some examples are — measurement of distance based on an estimated inch which is about the length of a thumb; judging the alignment or distance of an object by holding the thumb at eye level etc.

• WHAT IS RED CORNER NOTICE?

Certain requests used by Interpol are sent in the forms of notices. The colour of each notice determines the type of information being sent or received by Interpol and its members. A red corner notice is issued at the request of a country's law enforcement authority. The requesting country asks for a red notice to be issued when a criminal evades arrest and escapes from the country.

• WHICH IS THE SMALLEST AND LARGEST CITY IN THE WORLD BY AREA AND POPULATION?

The largest city in the world by population is Tokyo with over 35 million people. It was the world's most populous urban area between 1965 and 1970. However, despite Japan's declining population, it is still growing. The smallest city in the world by population is Hum. It has a population of only 23 people. It is a tiny town in the central part of Istria, North-West Croatia, 7 km from Roh, 14 km South-East of Buzet on a hill above the Mirna Valley The largest city in the world by area is Hulun Buir, encompassing 263,953 km. The smallest city in the world by area is Vatican City with an area of 44 hectares (108.7 acre). It is a landlocked sovereign city state whose territory consists of a walled enclave within the city of Rome. It is officially called State of the Vatican City.

• WILL CREATING TWO TIME ZONES FOR INDIA SAVE ENERGY?

There is no statistical evidence of two time zones being economically beneficial other than restoring a sense of normalcy to the area that follows its local meridian time zone. India geographically extends from 68 degrees East to 97 degrees East (29 degrees) from Gujarat to the Andaman & Nicobar Islands, thereby encompassing two time zones. However, it has adopted the Allahabad meridian of 72 degrees, which makes it convenient for the railways, airlines and media. This leads to weird experiences for travelers from Central India who visit the North-Eastern states which receive daylight before 5 am. This entails an extra cost to the economy in terms of industrial arid office lighting spent in these regions, since daybreak here doesn't coincide with the rest of the country. Also, there tends to be more traffic when it is dark.

• IS IT TRUE THAT CREATING TWO TIME ZONES FOR INDIA WILL SAVE ENERGY?

The Indian Standard Time is based on the meridian at 82 1/2 degrees East, which is 5 1/2 hours ahead of the Greenwich meridian. India's geographical middle lies at 82 1/2 degrees East, which was incorrectly mentioned as 72 degrees East.

• WHAT IS SECURITISATION?

Securitisation is the process through which existing assets or future cash flows are converted into marketable securities. Those assets or cash flows are, inherently, not marketable. There are two types of securitisation — assetbacked securitisation and futureflows securitisation. Some of the assets that can be securitised are loans and future cash flows like credit card payments, car rentals or any other form of future receivables. Securitisation is common in the US and Europe, but in India it is in a nascent stage.

• WHEN AND WHERE WAS THE NEWSPAPER PUBLISHED?

Acta Diurna' was the first news paper published in Rome, around 59 BC. In 1605, the first printed weekly newspaper to be published in Antwerp was called Relation. Johann Carolus (1575-1634) was the publisher of the Relation aller Furnemmen und gedenckwurdigen Historien (Collection of all Distinguished and Commemorable News). The ^Relation' is recognized by the World Association of Newspapers, as well as many authors, as the world's first newspaper. The German Relation was published in Strasbourg, which had the status of an imperial free city in the holy Roman empire of the German nation.

• WHEN WAS THE BATTLE OF LOS ANGELES?

The Battle of Los Angeles took place during the night of February 24/25, 1942 in Los Angeles, California. The battle involved heavy firing of anti-aircraft shells by the US forces aimed at several mysterious flying objects reportedly sighted in the sky over Los Angeles. These objects were thought to be Japanese military aircraft. However, even till today, their identity has not convincingly established. Even though six civilians lost their lives in the bombardment, there was no evidence that the firing destroyed any flying object. The firing was preceded by a blackout and Sounding of air raid sirens. Now, many believe that the battle was the result of a false alarm, triggered by weather balloons, or Japanese blimps. Some even think the source of the alarm could be a flying object of extraterrestrial origin.

• WHO IS LADY JUSTICE?

The origin may be Themis, a Greek mythological goddess, who advised Zeus after his purge of the old pantheon. A daughter of Themis and Zeus, Dike, known as a goddess of justice but not divine justice, presided over the apportionment of things among mortals, the protection of individuals and the social and political order. At times, Dike is said to be the same as (or is confused with) Astraea. Astraea is also a daughter of Themis and Zeus and is known as a goddess of justice. In western tradition, Lady Justice sometimes wears a blindfold and carries a sword and scales. She symbolises the fair and equal administration of the law, without corruption, avarice, prejudice, or favour.

• WHO DESIGNED THE LINCOLN MEMORIAL?

The Lincoln Memorial in Washington D.C. is a United States presidential memorial built to honour its 16th President Abraham Lincoln. The architect is Henry Bacon (an American Beaux-Arts architect), the sculptor is Daniel Chester French, and the painter of the murals inside is Jules Guerin. The building is in the form of a Greek Doric temple and contains a large, seated sculpture of Abraham Lincoln and inscriptions of two well-known speeches by Lincoln.

• WHICH COUNTRY HAS THE MAXIMUM NUMBER OF UNIVERSITIES?

According to UNESCO, India tops the list with 8,407 universities. It's followed by the United States  (5,759), Argentina (1,705) and Spain (1,415).

• WHO ARE HOBOS?

Hobos is an American word which refers to homeless people wandering about in search of work. In earlier days, hobos were supposed to move around by hopping from one freight train to another, just to save the cost of transportation. Hobos and hobo culture began in mid-19fh century, when the ending of the Civil War caused severe unemployment in the US and several people left their homes and started moving about the whole country in search of jobs. A similar phenomenon happened during the Great Depression of the 1930s. Although the term owes its origin to the above phenomena, it is used today to refer to a tramp in general, an aimless traveller not necessarily looking for work. There are several theories related to how the word hobo got coined: some say the word has been derived from the phrase hopping box cars, and some others that it is a shortened version of the rail-road greeting 'Ho Beau,' popular in the 19th century

• WHICH CONTINENT HAS THE MOST NUMBER OF PORTS?

With over 1,000 ports, Europe is perhaps the continent with most number of ports. The UK alone has over 200 ports and European ports handle about 3.5 billion tones of cargo.

• WHY IS A SANDLOT USED AS A PLAYING AREA FOR CHILDREN?

A sandlot refers to a vacant lot used by children to play games, mostly unorganised ones. Unlike a playground specifically created for certain games, sandlots perhaps developed as informal spaces which children made use of to serve as makeshift playgrounds. In the US, sandlot baseball refers to an advanced version of the game played by teams not affiliated with either the Major or Minor leagues in the country

• WHO ARE WING WALKERS?

Wing walkers are those who walk on wings of an airplane in flight. Recently, a wing walker hung from a 450 Stearman aircraft when it was in flight. This stunt was performed as part of the Flying Circus Air Show in Bealeton, Virginia.

• WHAT ARE P-NOTES?

P-Notes are financial instruments that facilitate investment in Indian securities by foreign investors or hedge funds that are not registered with the Securities and Exchange Board of India. Indian brokerage houses buy the securities on behalf of these foreign investors and hedge funds and issue P-Notes to them. Any dividends or capital gains collected from the underlying securities will keep going back to the foreign investors and hedge funds. The value of P-Notes is determined on the basis of shares listed on the stock exchanges.

• WHY IS THE REPUBLIC OF SOUTH AFRICA REFERRED TO AS A RAINBOW NATION?

The Republic of South Africa is referred to as a Rainbow Nation to describe the unity of various cultural, racial or ethnic groups in the country during the postapartheid era (after 1994) compared to the earlier divisiveness based on skin colour. This phrase was coined by the then Archbishop of Cape Town, Desmond Tutu, and later used by Nelson Mandela, the first President of the Republic of South Africa elected in the first polls conducted after apartheid rule officially ended. In some South African cultures, the rainbow is always associated with hope and a bright future. Incidentally, the South African Hag also has six rainbow-like colours.

• WHO IS THE SECOND ASIAN AFTER RABINDRANATH TAGORE TO WIN THE NOBEL PRIZE FOR LITERATURE?

Shmuel Yosef Agnon (1888-1970) of Israel shared the 1966 Nobel Prize for Literature with Nelly Leonie Sachs (1891-1970), a GermanSwedish poet. This was 53 years after Tagore won the prize in 1913. The first Asian after Tagore to win it solo was Kawabata Yasunari (1899-1972), a Japanese novelist, in 1968.

• WHICH IS THE WORLD'S FIRST POST OFFICE?

Although the origins of the postal system date back to antiquity, the British Postal Museum claims the oldest functioning post office in the world is on High Street in Sanquhar, Scotland. According to the museum, this post office has functioned continuously since 1712 AD. Sanquhar is a quiet, insignificant town, but in its heyday, its residents included many influential aristocrats, who must have played a significant role in having the first post office located there. Those days, horses and stage coaches would carry mail.

• WHAT IS A CALLIOPE?

It is a musical instrument with a loud, shrill sound that's audible miles away It is used to attract attention at circuses and fairs. It was invented in the United States around 1850 by A S Denny and patented in 1855 by Joshua C Stoddard. It consists of a boiler which forces steam through a set of whistle pipes. Either a keyboard or a pinned cylinder (like that of a barrel organ or music box) controls the entry of steam into the pipes.

• • Calliope was one of the nine muses in Greek mythology. Her name means beautiful voiced and she was the daughter of Zeus (God of sky and thunder) and Mnemosyne (Goddess of memory). She is the muse of epic poetry and eloquence. She was the oldest and wisest of the muses as well as the most assertive. She is often represented as a stately young woman whose brow is crowned with gold, while in some legends, she is seen with a writing tablet, scroll, or book in her hand and wearing a gold crown. She is best known as the inspiration for Homer's Miad and the Odyssey.
• WHY IS SUN TEMPLE, KONARK CALLED THE 'BLACK PAGODA?

Today, the Sun Temple, a magnificent pagoda, is located 2 km from the sea but, in olden times, it was much closer. So, the temple was used as a navigational point by European sailors. They referred to it as the 'Black Pagoda' due to its dark colour and its magnetic power that drew ships into the shore and caused shipwrecks.

• WHEN WAS THE SICAB HORSE SHOW FIRST HELD?

In 1980, the first Sicab (Salon Internacional del Caballo) was organised in Seville. The following year, it took place in Madrid. Today, there are more than 200 horse shows a year dedicated exclusively to the Purebred Spanish Horse.

• WHEN WERE CHOPSTICKS FIRST USED?

Chopsticks were made over 5,000 years ago in China. The earliest version of chopsticks were plain sticks or branches from trees which were used to retrieve food from fire. The teachings of Confucius forbade followers to use knives at the dining table, which further increased the popularity of chopsticks in Eastern Asia. Today, chopsticks are no longer confined to culinary purposes. Japan has even launched a bra called 'My Chopsticks Bra' which is made from recycled chopsticks. This would reduce the decimation of entire forests to manufacture chopsticks.

• WHAT IS A ‘BREATHING FABRIC’?

A 'breathing fabric' is designed to prevent the wearer from getting too hot or cold by adjusting itself to both the internal and external temperatures. The textile is made up of a layer of thin spikes of wool, or another water-absorbent material that opens up when it's made wet by the wearer's sweat. When the layer dries out, the spikes automatically close up again. A second layer underneath protects the wearer from the rain.

• WHAT IS A TITANIUM TOOTHBRUSH?

Titanium toothbrushes, which were invented in Japan and now are being exported to the US, might help do away with toothpaste. One variety of the toothbrush uses titanium dioxide, which causes an electrochemical reaction while brushing and this helps remove plaque. The other type uses titanium bristles that last for several years.

• WHY IS SATURN ASSOCIATED WITH AGRICULTURE?

In Roman mythology, Saturn is regarded as the god of agriculture. He is usually depicted holding a scythe to harvest land. Farmers in ancient Rome believed that Saturn had the power to bring a good harvest and if made angry could destroy it. In order to receive his blessings, they held a festival named Saturnalia. According to another myth, Saturn established the Golden Age in Rome. He introduced agriculture to his people by teaching them how to farm the land.

• WHAT CAUSES THE HEILIGENSCHEIN EFFECT? WHO DISCOVERED IT?

If an observer stands on dew-covered grass with his or her back turned towards the early morning sun, the observer is likely to observe a faint glow around the shadow of his or her head on the grass. Such a faint glow is called Heiligenschein, and the above optical phenomenon, the Heiligenschein effect. It occurs because the dew droplets act as tiny lenses focusing both the sunlight falling on the surface on which the shadow is cast, and the light that is back-scattered by the surface. In general, when a long shadow is cast on certain irregular surfaces with specific optical characteristics, the above effect occurs. Although Heiligenschein must have been known for a long time, it was first described in writing by the Italian sculptor and painter Benevenuto Cellini (1500-1571). Sometimes it's called the Cellinis halo. In German, Heiligenschein means holy glow.

• WHAT ARE THE OLEFINS?

An alkene, olefin or olefine is a class of highly reactive unsaturated hydrocarbons, recovered from petroleum, with at least one carbon-carbon double bond. The simplest alkenes, with only one double bond and no other functional groups, form a homologous series of hydrocarbons with the general formula CnH2n, eg. Ethylene (ethane), propylene (propene), butylenes (butene) and so on. The olefins are widely used for making synthetic fibres.

• WHO BROKE THE SOUND BARRIER?

Chuck Yeager broke the sound barrier on October 14,1947. He flew a plane faster than the velocity of the sun and broke the sound barrier which caused explosive vibrations over the atmosphere.

• WHAT IS THE MONTY HALL PROBLEM?

The Monty Hall problem talks about a situation where there are three closed doors —a goat lies behind two and a car behind the third. A person is asked to select a door (which is not opened immediately). Instead, one of the two unchosen doors are opened and the content is revealed, which incidentally turns out to be a goat. The person is now asked whether he would like to switch his choice to the other unopened door. This gets him thinking. Will changing his choice increase the possibility of winning the car? Common knowledge lets us assume that since now there are two closed doors (one with a goat and the other with a car), chances of winning a car if either of the doors are chosen is 1/2. Hence, it really isn't a winning situation to motivate a person to change the choice. However, what one needs to remember is the fact that when the person initially made the choice, all three doors were closed and the probability of having a goat behind a closed -toor was 2/3. Now that we already know of ie door that has a goat behind it, chances f winning the door with the car if the peron decides to change his initial choice is /3, which is higher than what he would am if he refuses to change his decision.

• WHO INVENTED THE HELICOPTER?

French inventor Launoy and Bienvenue created a toy with rotary wings which could take off vertically and fly The term helicopter was later coined by French writer Ponton D'Amecot: helico for spiral and pter for wing. It was only in 1907 that the first helicopter was piloted by PaulCornu, who also created the model. The 100th anniversary of the helicopter's first flight was celebrated on November 13,2007.

• WHAT IS THE ORIGIN OF THE LAUGHING BUDDHA?

Hotel or Pu-Tai is better known as the Laughing Buddha. The image of Hotel is based on a Chinese Zen monk who lived over 1000 years ago. Many regarded him a future Buddha because of his benevolent nature. It was due to his large protruding stomach and smile that he came to be known as the Laughing Buddha; His image graces many temples, restaurants and homes in China and Japan. Legend has it that if one rubs the Laughing Buddha's great belly, it brings wealth, good luck and prosperity

• WHAT ARE BLUELAWS AND WHY THEY ARE CALLED SO?

A bluelaw is enacted by the people of the Dominion of New Haven. These laws in the United States and Canada are designed to enforce moral standards, particularly the observance of Sunday as a day of worship or rest. They came to be known as bluelaws because they were supposedly printed on blue paper. Contrary to popular belief, there is no evidence to support this assertion.

• WHO IS CREDITED WITH HAVING THE HIGHEST IQ?

Marilyn vos Savant is an American magazine columnist, author, lecturer and playwright who rose to fame through her listing in the Guinness Book of World Records under the Highest IQ category, with a score of 228. She wrote for acolumn called Ask Marilyn in a magazine in which she answers questions from readers on a variety of subjects.

• WHICH IS THE WORLD'S FIRST COURIER SERVICE?

Overseas Courier Service, the world's first courier service providing firm, was established in 1957 by a consortium of major newspaper publishers in Tokyo as a global, overnight delivery system for time-sensitive business publications. It was the first such private international network, dedicated entirely to overseas air-speed shipping.

• WHY IS LAS VEGAS CALLED SO?

Las Vegas was named by Spaniards in the Antonio Armijo Party, who used the water in the area while heading along the Old Spanish Trail from Texas. In the 1800s, areas of the Las Vegas Valley contained artesian wells that supported extensive green areas or meadows (vegas in Spanish) and hence the name Las Vegas.

• WHO INVENTED THE CLOCK?

The earliest way of telling the time was by looking at the progress of the shadow cast by a twig stuck up-right in the ground. Round about 1300 BC, this was developed by the inhabitants of ancient Egypt and Mesopotamia into the sundial. The sundial served for a thousand years until the invention of the clepsydra, or water clock. This was the first clock with moving parts. The mechanical clock was not invented until the 13th century and it was driven by weights. The spring-driven clock was invented sometime around 1450 AD.

• WHO INVENTED THE CLOCK?

The primitive type of clock was invented by Henry de Wick in 1368. He installed it on the tower of the castle of the king of France. Using the technique of a pendulum, the clock was developed by French engineer Hyudhence in 1639. Electricity was deployed in the clock by Alexander Ben around 1840-50.

• WHO ARE 'THE LITTLE EMPERORS'?

They refer to obese little boys in China without any siblings. They are heavily doted on by their parents and grandparents, who feed them calorie-laden candies and fast food. As a result, obesity has become a problem amongst Chinese teenagers. It's also seen as a fallout of the strict population policy of China which restricts couples from having more than one child, because of which parents and relatives tend to spoil their children with fatty foods.

• WHAT WERE GULAG CAMPS?

The Gulag, a system of forced labour camps in the former USSR, was first established in 1919 under the Cheka, its secret police. Prisoners included murderers, thieves, and other common criminals along with political and religious dissenters. The Gulag, whose camps were located mainly in remote regions of Siberia and the far North of USSR made significant contributions to the Soviet economy in the period of Joseph Stalin. Conditions in the camps were extremely harsh. After Stalin died in 1953, the Gulag population was reduced significantly, and condition of inmates somewhat improved.

• WHO IS CHE GUEVARA?

Ernesto Che Guevara was a Cuban revolutionary leader. Though communism may have lost its fire, he remains the symbol of rebellion and the alluring zeal of revolution. By the time Ernesto Guevara, known to us as Che, was murdered in the jungles of Bolivia in October 1967, he was already a legend, not only in Latin America but also around the world. His fearless last words, reportedly, were "Shoot, coward, you're only going to kill a man".

• WHO IS CHE GUEVARA?

Though a comrade of Fidel Castro in the Cuban revolution, Ernesto Che Guevara was actually from Argentina, not Cuba. His nickname 'Che' (loosely translates as 'yaar' in India) is an Argentinian slang.

• WHAT IS THE ORIGIN OF JAZZ MUSIC?

Jazz originated among the Black people in New Orleans in the late 19th century and is characterized by syncopated rhythms and improvisation. It has since developed various styles. Jazz originally drew on Ragtime, Gospel, Black spiritual songs, West African rhythms, and European harmonies. The term jazz originated in southern United States (it is first recorded in 1909, applied to a type of ragtime dance), and it is tempting to speculate that its ancestor crossed the Atlantic on the slave ships from Africa. In the absence of any certain origin, various colourful alternative theories have been put forward, for instance, the name jazz came from the nickname of a certain Jasbo Brown, an itinerant musician along the banks of the Mississippi.

• WHAT IS AGENT ORANGE?

Agent Orange is a defoliant herbicide mixture used during the Vietnam War to destroy forests in Vietnam. The United States sprayed 20 million gallons of Agent Orange over forests in Vietnam, and as a result, members of the armed forces were exposed to it. Agent Orange, named as such due to the orange colour of its storage drums, is a 50:50 mixture of the butyl esters of 2, 4-D and 2,4,5-T. It is probable that damage to humans would be due to the highly toxic impurity dioxin present in Agent Orange.

• HOW OLD IS THE JERUSALEM OLD CITY?

Jerusalem is one of the oldest cities of the world, having a history that begins in the fourth millennium BC. There was a mention of the city even in the Egyptian texts that belonged to 20th century BC. David was the first Jewish king to conquer the city of Jerusalem in 1007 BC and adopt it as his capital. Over the next several centuries, the city has been conquered and ruled by several different groups of people and countries, and has become a holy city for Jews, Muslims and Christians. Today, it is under the control of Israel and happens to be Israel's largest city. What has been the city of Jerusalem until 1860s, is the 0.9 square kilometre walled portion inside the modern city of Jerusalem. The walled portion is called the old city today. The old city is divided into four quarters, Armenian, Muslim, Christian, and Jewish, and houses many important shrines.

• WHO IS KNOWN AS A MATHLETE?

Just as athletes participate in athletic events, matheletes are those who compete in mathematics competitions. The word is a trademark of MathCount Foundation. Recently, a French mathlete named Alexis Lemaire calculated the 13th root of a 200-digit number in just over 70 seconds. By doing so, he beat his own previous record of 72.4 seconds at an event in London's Science Museum.

• WHAT IS A MOM-AND-POP SHOP?

A mom-and-pop shop is a colloquial expression for a single-family operated business with few or no employees other than the owners. Sometimes, fewer than ten employees work in these small or micro businesses. People who speak of mom-and-pop businesses often refer to the unique perspective offered by patronizing a family business. Some encourage the unknown experience of entering a mom-and-pop establishment over franchise businesses, which typically offer comparable stores and similar consumer experiences, regardless of location. For example, mom-and-pop businesses are often highlighted in travel guides, because going to a business owned and operated by a family allows a traveller to fully experience and understand the people of another culture.

• WHO INVENTED CHEWING GUM?

Thomas Adams, a rubber scientist, invented chewing gum. He was working with a substance called chicle, a gum prepared from the latex of the saphodila tree, a tropical evergreen plant. By chance, he popped a small piece of chicle into his mouth and chewed it casually to while away time. Suddenly, it occurred to him that others may derive pleasure from chewing chicle, which is, even today, a chief ingredient in chewing gum.

• WHICH IS THE LONGEST ACRONYM IN USE?

Adcomsubordcomphibspac is the longest English acronym. It's a navy term which stands for Administrative Command, Amphibious Forces, Pacific Fleet Subordinate Command.

• WHAT IS THE DIFFERENCE BETWEEN A FRESCO AND A MURAL?

A mural is any large painting on a wall, ceiling or any other large structure. There are many techniques used to make them. A fresco, executed using water-soluble paints on wet or dry limestone, is one of the techniques and probably the most popular. A primary characteristic of a fresco is that the paintings, though often done in parts