Saturday, 26 April 2014



Homi Jehangir Bhabha’s life and contributions

Answer the following questions in 150 words:

1. Describe the beginning of the age of nuclear energy and India’s approach to it.
A: - Homi Jehangir Bhabha is one of India’s greatest personalities in the field of Physics and atomic energy. Atomic energy, so far, is a recent phenomenon not only to India but even to the most advanced countries of the world. Scientists in Europe discovered a fact that the nuclei of certain elements contain a vast amount of energy. They also discovered that some unknown force working inside the nucleus of an atom.
             While the scientists of Europe were unable to detect what that force was and how it could be unleashed, Bhabha could foresee the tremendous benefits of nuclear energy. On the advice of Bhabha, the Atomic Energy Commission of India was founded in 1948. After six years it became the Atomic Energy Department. A site was chosen to house (place) the reactors and laboratories. In this station, sincere effort was made to lay down the basics of atomic research in terms of training man power and providing the infrastructure ultimately leading to the production of atomic power. This progress in field of atomic energy is brilliant success in India. Within the span of thirty years’ time, India could become a nuclear power as the foundation of nuclear energy had already laid in India. It was only because of Bhabha’s efforts that India was able to entry into the selective nuclear club.

2. Why does the author say that Bhabha was a modern man in every sense of the term?
A: - Homi J. Bhabha was an extraordinary person. He was not a traditional being in understanding the issues of the world. He, in fact, did not have emotional attachment with India. It might have happened in his case as he spent many of his academic years in England. While, after returning from India, a sense of deep feeling of identity as an Indian grew within him. However, this feeling was not a cultural factor which rooted him in India but a sense of responsibility. As a modern intellectual man, he just thought what he as a scientist could do to shape India's future. 
              Bhabha wanted to see the progress of India in the fields of science and research. His ideas and perception are beyond the imagination of common people. When the scientists of Europe were unable to foresee the possibilities of Nuclear energy, Bhabha's brilliant mind could foresee the tremendous possibilities of it. He put all his efforts to make India a nuclear power in the world. He made it clear to all the experts of the world how nuclear energy could compete with traditional thermal power.
Hence, it is apt to say that Bhabha was a modern man in every sense of the term.

3. What changes did Bhabha bring about in the scientific field of India?

A: - When Bhabha came from Cambridge, England, he noticed that there were skilled people working in isolation. He then decided to make use of their skills by bringing them together. The idea of a school of research came to him and it resulted in the establishment of Centre for Advanced Research in fundamental Physics, which was later renamed as the Tata Institute of Fundamental Research in Bombay. Bhabha tried his level best for the development of this research institution.
                When atomic energy was a new concept to India, Bhabha laid foundations of it. He was responsible for the establishment of Atomic Energy Commission in India, which enabled India to become a nuclear power in the world over a span of just 30 years.
             When the then laboratories of India were surrounded by drab (dirty) buildings, Bhabha did not hesitate to afford large sums of money in beautifying the environment. Besides nuclear energy, he encouraged Indian government to establish other kinds of energy plants. Hence, a heavy water plant was set up in Nangal, a monazite plant at Alwaye. The Atomic Minerals Division was set up in the area where Uranium and other useful elements were available. 
                   In India, the conventional kind of research had been confined only to universities and even the facilities in them are inadequate. This research institute can be obviously compared with world's best research institutes. As India possesses a large amount of thorium resources, Bhabha had a dream to utilize it for the creation of nuclear fuel. Bhabha had also given thought to India to work on production of fast breeder reactors which are crucial for producing nuclear fuel. It was resulted in the set-up of an experimental fast reactor at Kalpakkam, near Madras.

4. What were Bhabha's efforts to set up research institute in India?
A: - Homi Jehangir Bhabha is one of India’s greatest personalities in the field of Physics and atomic energy.
                 Homi Jehangir Bhabha’s return to India from Cambridge University, was one of the happiest incidents in the history of India as he put a lot of effort for the establishment of a research institute in India. When he noticed some competent people in India, who were working in isolation, he wanted to make use of their skills by bringing them together. The idea of a school of research came to him, and it resulted in the establishment of Center for Advanced Research in Fundamental Physics. Somehow or other how, Bhabha wanted to see the establishment of it, he managed to convince the then India's great industrialists, the Tatas of the need for such a research centre. His requests bore (were accepted) fruit, in 1945 the Tata Institute of Fundamental Research (TIFR) was set up in Bombay. He gathered young and talented scientists from all over India to work at the institute. A good school of mathematics was also started in the institute under D.D. Kosambi, a teacher from a Bombay college. A bright Indian mathematician, K. Chandrasekharan was requested to join the staff. Bhabha invited noted scholars from all over the world to give lectures in his institute. Cosmic ray studies were the major subject of research in it. Due to his connections with the world of business, Bhabha never lacked funds. If there was a shortage of men in Bombay, he recruited men from all over the country. From the start, because of Bhabha's extreme cooperation, the institute had a healthy cosmopolitan character.
               Hence it is obviously apt to say that without Bhabha's efforts, we would not have seen the TIFR in India. He was a rare gift to India.

        

 


Climatic Change and Human Strategy

Write brief answers for the following questions:

1)  What do human beings often tend to forget when engaging in large-scale developmental activities?
A: - E.K. Federov (1910-1981) was a Russian Citizen. He wrote number of books and articles on Environmental protection and ecology and Meteorology etc.
           In this lesson, Federov says that Human beings often tend to forget the damage they cause to nature. The current scientific and technological progress seems to be making mankind less controlled by natural environment. The construction industry, which was highly seasonal in the past, now, we make it active all the year round. We, with this large-scale construction, only bother the development and we tend to forget huge burden we impose on earth. We often make holes on the earth to extract huge amount of mineral resources (e.g.:- petroleum, coal, natural gas, stone etc.). While we do so, we often forget the consequences of these actions. We, for the sake of power generation, use all types of energy resources like water, coal etc. to the maximum extent. People don't bother the direct release of huge amount of heat that prevails (spread) in the atmosphere.
          It is possible that with the advancement of technology we can even transform desert areas into vast agriculture fields. In this way we tend to do anything for our development. While, we don't consider our dangerous activities that effect on the composition of atmosphere and hydrosphere. The present humanity as measured both by its size and by the duration over which it has taken place, has increased so much that it can almost be compared with the natural phenomena of nature. Now-a-days we cannot consider nature self-balanced, self-controlled. We cannot also consider nature's resources inexhaustible
     Moreover, many of our actions, such as construction, or land reclamation are deliberately intended to continue for long periods of time.

2. What are the parameters responsible for the overall stability of climate in different parts of the world?
A: - Climate is a consequence of the workings of complex processes in the atmosphere, in the oceans and on land. In other words, the sum of stable characteristics of mean and extreme temperatures, precipitation amount, and seasonal river discharge is called climate.
                  As a result of unequal heating of the Earth's surface by the sun, an atmospheric circulation pattern is developed and maintained. Theoretically, this circulation is very straightforward. It is a system in which air is warmed at low levels in the equatorial region, ascends, and flows to pole ward. It is then cooled, descends and flows back towards the equator. The main features of this general atmospheric circulation in the average time span of some years or decades, do exhibit some continuity and permanence. This relative stability of overall pattern is due to the general constancy of several atmospheric and oceanic parameters, even though the values of these parameters differ from one part of the planet to another. These parameters include, less and extreme temperatures, balanced precipitation amount and seasonal discharges etc.

3. Have there always been noticeable differences in climate in the history of the earth?
A: - No. There haven't always been noticeable differences in climate in the history of the earth. There is a good reason to believe that during the last several hundreds of million years, the normal climate of the earth as a whole was almost similar than it is at present. There were very less pronounced differences in climate between different latitudes, which we experience today.
               However, several tens of millions years ago, this situation began to change, and the temperatures of high latitudes fell gradually. About two million years ago this process accelerated and Arctic region temperatures dropped sharply. A glacial period resulted, in which repeated advances of ice sometimes reached mid latitudes with intervening periods when the ice moved back.
           From the recent one thousand years, less marked climatic changes have taken place. The temperature of North Polar Region was higher than it is today and the limit of sea ice was further less than it is at present.

4. What are the two kinds of factors that cause the climate to change over long periods of time? Give two examples of each kind.
A: - There are two kinds of factors that cause the climate to change over long periods of time. They are: external factors and internal factors.
              External factors include variations in the quantity of radiation emitted by the sun and the changes in the earth's orbit around the sun. The average temperature of a region varies by depending on the amount of radiation it receives from the sun. When an area receives huge amount of radiation, its temperature levels will increase. If a region receives less amount of radiation, its temperature levels will decrease. Likewise, the variations in the average distance between the sun and earth may result in the variations in temperature of a region.
            Internal factors include the formation and movement of continental areas, the growth of mountain ranges and the volcanic activity of various kinds that produces dust and gases which may change the visibility and other characteristics of the Earth's atmosphere.

5. What are the main ways in which human development has affected climate patterns on the earth?
A: - Human beings are mainly responsible for climatic changes. Human existence necessarily has its effects on nature. Human development could not have taken place as it transformed various elements of the natural environment. Some of the impacts that are of the most relevance to the subject of climatic changes are;
Transformation of land surface of the planet by deforestation, by ploughing up of the Steppes (grasslands) and the Great Plains, the construction of huge man-made lakes and reservoirs, the conversion of large areas to a built-up environment etc. These transformations alter the reflectivity of earth's surface and this, in turn causes changes in the energy balance and in local atmosphere circulation patterns.
Changes in the water balance i.e. a great quantity of river discharge is used for irrigation or to meet industrial needs. Evaporation over land areas consequently tends to increase, and run off into oceans decreases. It is probable that the entire discharge may ultimately be utilized in this way. This will not change the general hydrological cycle on the planet, but it will lead to a different relationship between the various elements of the cycle in different geographical regions.
Changes in the energy balance. The earth-atmosphere heat balance can be changed both by alterations in the transparency(visibility) of the atmosphere (due mainly to carbon dioxide released by combustion of fossil fuels) and by direct release of huge amount of heat as a result of power generation and the use of all types of energy.
        The problem, now, with this kind of human activity is, if energy production were to increase repeatedly (which is quite possible during the next 100 to 200 years), the climate would begin to change on a regional and possibly on a global scale as well.

6. Two elements of the strategy mentioned in the essay are the assessments of the meteorological parameters of climate change and its relation to socioeconomic development. What is the third part of the strategy the writer recommends?
A: - E.K. Federov recommended three strategies to stop irreversible climatic changes.
              The first one is the appropriate assessments (understanding) of the meteorological parameters of climate change. The second one is the impacts of climatic change on socioeconomic development and vice versa.
                The third element of the strategy is to make recommendations to all the people on how to avoid the adverse results of climatic change, or if possible to avoid such change altogether. It is, for example, often suggested that fuel and energy use should be reduced to prevent the percentage of Co2 content of the atmosphere. Restriction of energy use is also recommended in order to preserve the planetary balance.
            The majority of these kinds of recommendations are aimed at the preservation of present climate. While international cooperation, peace and disarmament are also very essential to achieve these strategies.

 

Saturday, 19 April 2014

SOME CONFUSED WORDS

canvas
a rough cloth
canvass
to ask for votes
centenarian
someone who is at least 100 years old
centurion
the commander of a company of 100 men in the ancient Roman army
cereal
food processed from grain
serial
a book or radio or television performance delivered in instalments
ceremonial
describes the ritual used for a formal religious or public event
ceremonious
describes the type of person who likes to behave over-formally on social occasions
childish
of, like, or appropriate to a child
childlike
having the good qualities, such as innocence, associated with a child
clothes
garments
cloths
the material out of which clothEs are made
canon
is a cleric
cannon
is a large gun
cast
a group of actors in a play
a plaster CAST
throw (something) forcefully in a specified direction 
caste
a social group
cite
to refer to
sight
vision
site
land for a particular purpose
complement
that which completes
compliment
praise
alley
a little lane
ally
a friend
contemptible
worthy of contempt
contemptuous
a person who shows contempt is
contemptuous
council
a board of elected representatives
counsel
advice
councillor
an electedrepresentative
counsellor
one who gives professional guidance
credible
believable
credulous
gullible
currant
a small dried grape used in cooking
current
a steady flow of water, air
or electricity
happening at the present time
allude
to refer to indirectly
elude
to evade capture or recall
allusion
an indirect reference
delusion
a false belief
illusion
a deceptive appearance
alternate
alternate Mondays (every other)
alternate between two moods
alternative
another possibility
two choices
amoral
not being governed by
moral laws
immoral
means breaking the moral
laws
astronomy
the scientific study of the stars and planets
astrology
the study of theinfluence of the stars and planets on human life and fortune
beside
next to
by the side of
besides
Also
as well as
blond
to describe men’s hair
blonde
to describe women’s hair
boarder
a person who pays to live in someone’s house
border
the edge or boundary of something
born
eg. He was born in 1989.
borne
bear-bore-borne (past participle)
dairy
a building or room for the processing, storage, and distribution of milk and milk products
diary
a book in which one keeps a daily record of events and experiences
decent
conforming with generally accepted standards of respectable or moral behaviour
descent
act of coming down
ancestry
desert
abandon in a way considered disloyal or treacherous 
sandy
dessert
a pudding
disinterested
impartial, unselfish, acting for the good of others and not for yourself
uninterested
bored
economic
related to the economy
economical
Thrifty
avoiding extravagance
effective
able to produce a result
efficient
working well without wasting time, money or effort
eligible
suitably qualified
legible
able to be read
emigrant
leaves his or her country to live in another
immigrant
moves into a country to live permanently
eminent
famous
imminent
about to happen
epigram
a short witty saying
epitaph
an inscription on a tombstone
exceptionable
open to objection
exceptional
unusual
exhausting
tiring
exhaustive
Thorough
fully comprehensive
explicit
stated clearly and openly
implicit
implied but not actually stated
fewer
the comparative form of ‘few’
used with plural nouns
eg. fewer children
less
the comparative form of ‘little’
‘a small amount’
eg. less enthusiasm
less than is used with number alone; eg. Less than ten
fiance´
masculine
fiance´e
feminine
heroin
a drug
heroine
a female hero
historic
famous in history
memorable
likely to go down in recorded history
historical
existing in the past
imaginary
existing only in theimagination
imaginative
showing or having a vivid imagination
impractical
could be done but not    worth doing
impracticable
incapable of being done
industrial
associated withmanufacturing
industrious
hard-working
its
a possessive adjective 
eg. its colour
it's
It is 
it has
judicial
pertaining to courts of law and judges
judicious
showing good judgment
later
the comparative of ‘late’
shows time
latter
the opposite of ‘former’
shows position
lay
Lay-laid-laid
lay down the weapon
she laid an egg yesterday
she has laid an egg already
lie
Lie-lay-lain
I lie down for rest.
I lay down for rest yesterday
i have lain down in the shadow of this tree many a time.
luxuriant
growing abundantly
luxurious
rich and costly
masterful
dominating
masterly
very skilful
medal
a small metal disc given as an honour
meddle
to interfere
momentary
Lasting only for moments
momentous
of great significance
official
Authorised
formal
officious
Self-important
interfering
partake
to share with others (especially food and drink)
participate
to join in an activity
to play a part in
personal
Of or pertaining to a particular person
personnel
Employees
office staff
principal
chief teacher
important
principle
moral rule
quiet
silent
quite
very
sceptic
One who doubts
septic
Infected by bacteria
sew
stitch
sow
Plant
scatter
social
related to society
sociable
friendly
stationary
Not moving
still
stationery
Writing materials
envelops
office materials
veracity
truthfulness
voracity
greed


SOME CONFUSED WORDS 2

Are you uncertain which one is right? There are a lot of words in English that look or sound alike but have very different meanings, such as pore and pour or flaunt and flout. It’s easy to get them confused and most electronic spellcheckers won’t be much help in this type of situation: they can tell you if a word has been spelled wrongly but they can’t generally flag up the misuse of a correctly spelled word.
Here’s a quick-reference list of pairs of words that regularly cause people problems. The words follow the accepted British English spelling. Some of them do have alternative American spellings and you will find these at the main dictionary entry on this website.

Word 1
Meaning
Word 2
Meaning
to agree to receive or do
not including
unfavourable, harmful
strongly disliking; opposed
recommendations about what to do
to recommend something
to change or make a difference to
a result; to bring about a result
a passage between rows of seats
an island
all in one place, all at once
completely; on the whole
moving or extending horizontally on
referring to something of great length
out loud
permitted
a sacred table in a church
to change
not concerned with right or wrong
not following accepted moral standards
to assess
to inform someone
agreement, approval
the action of rising or climbing up
relating to the ears or hearing
relating to the mouth; spoken
pleasantly warm
foolish, crazy
naked; to uncover
to carry; to put up with
in phrase 'with bated breath', i.e. in great suspense
with bait attached or inserted
a Middle Eastern market
strange
a bunk in a ship, train, etc.
the emergence of a baby from the womb
having started life
carried
a branch of a tree
to bend the head; the front of a ship
a device for stopping a vehicle; to stop a vehicle
to separate into pieces; a pause
to break through, or break a rule; a gap
the back part of a gun barrel
to raise a subject for discussion
a piece of jewellery
a type of strong cloth
to seek people’s votes
to criticize strongly
to ban parts of a book or film; a person who does this
a grass producing an edible grain; a breakfast food made from grains
happening in a series
a group of musical notes
a length of string; a cord-like body part
forming a climax
relating to climate
rough
a direction; a school subject; part of a meal
smug and self-satisfied
willing to please
to add to so as to improve; an addition that improves something
to praise or express approval; an admiring remark
a group of people who manage or advise
advice; to advise
a signal for action; a wooden rod
a line of people or vehicles
to keep something in check; a control or limit
(in British English) the stone edge of a pavement
a dried grape
happening now; a flow of water, air, or electricity
to make a situation less tense
to spread over a wide area
a waterless, empty area; to abandon someone
the sweet course of a meal
careful not to attract attention
separate and distinct
impartial
not interested
a current of air
a first version of a piece of writing
an even score at the end of a game
a sliding storage compartment
having two parts
a fight or contest between two people
to draw out a reply or reaction
not allowed by law or rules
to make certain that something will happen
to provide compensation if a person dies or property is damaged
to cover or surround
a paper container for a letter
physical activity; to do physical activity
to drive out an evil spirit
a young deer; light brown
a mythical being, part man, part goat
to display ostentatiously
to disregard a rule
to move clumsily; to have difficulty doing something
to fail
to refrain
an ancestor
an introduction to a book
onwards, ahead
to turn to ice
a decoration along a wall
gruesome, revolting
a type of bear
a store
a large crowd of people
to suggest indirectly
to draw a conclusion
reluctant, unwilling
to hate
to unfasten; to set free
to be deprived of; to be unable to find
a measuring device
a metric unit; rhythm in verse
to be a powerful factor against
to make less severe
the roof of the mouth
a board for mixing colours
a foot-operated lever
to sell goods
a long, slender piece of wood
voting in an election
to flow or cause to flow
a tiny opening; to study something closely
the use of an idea or method; the work or business of a doctor, dentist, etc.
to do something repeatedly to gain skill; to do something regularly
to authorize use of medicine; to order authoritatively
to officially forbid something
most important; the head of a school
a fundamental rule or belief
a person inclined to doubt
infected with bacteria
the ability to see
a location
not moving
writing materials
a level of a building
a tale or account
to arouse interest
to make more attractive
full of twists; complex
full of pain or suffering
a ring-shaped arrangement of flowers etc.
to surround or encircle