FLUX 2015
SCIENCE
MAGAZINE
Learn | Participate | Nurture | Believe
Science Exhibition 2015
Contents
1. From the Principal’s Desk.....................................................1
2. Fiction Follows Facts...........................................................2-3
3. Science of Yoga.....................................................................4
4. Facts on Technology..............................................................5
5. Fascinating bird facts............................................................6
6. Some Interesting facts...........................................................6
7. Let’s Know More..................................................................7
8. A poem on our Solar system.................................................8
9. Do you know.........................................................................9
10. Different Branches of Science..............................................9
11. Scientists.............................................................................10
12. Information on new technology.............................11
13. Acid ‘O’ Facts ..................................................12
14. Wonders of Biology........................................13
15. Organic Farming......................................14-15
16. Cathode Rays..................................................15
17. Short Biography of Camillo Golgi....16
18. Unsafe Indian Roads.......................17
19. Biggest and Smallest animals........18
20. Some amazing facts.........................19
21. Latest inventions..................................19
22. Riddles.........................................................20
23. Some Amazing Facts .....................................20
24. Amazing fact...................................................21
25. Benefits of technology......................................22
26. Easy way to memorise Mathematical Table......23
27. How to study Physics........................................24
28. Odds & Evens...............................................................24
From the Principal’s Desk
Newton's laws of gravitation, Einstein's E=MC2, Faraday's perception of
semiconductor and endless scientific discoveries have engaged the human
civilization to processes of decrypting the code of the universe. Man is bemused
with his comprehension of the universe, which has no beginning and no ending.
Everything in this universe is in motion and in its own orbit.
Man observed with utter surprise how flowers bloom, seeds pollinate, reptiles go
in hibernation at times, tigers do not eat carnivores, ostriches do not fly, pisces are
edible, some plants are medicinal, hilltops have less oxygen, some metals are
stronger than the others and so on. Man started using his observations to fight the
struggles of inter species and intra species. He started his journey of winning such
struggles with sharp edged stones and ended in discovering nuclear weapons.
In the process of establishing his command on this macrocosm, man found that
welfare is more important than weapon. So man came out of his mask of
manliness and discovered medicines, manufactured finished products, sculpted
temples, joined rivers, made cold storages and sailed ships. Man became used to
using technology. Factories are being made to produce technological gadgets.
Forests are hewed down. Global temperature increases; crises are unbridled
today.
In this age of nano technology, man has many challenges. We are not afraid of
tigers, snakes, flood and forest fires any more. Neither Zenghis Khan invades now
a days, nor will the British sail in for another few hundred years. The devil who
had to come has stepped on this cosmos not from the ether but from the ill
practices of human beings and the devil is none other than 'Pollution'.
It is necessary for the students of this generation to be aware of the missed bullets
of the experiments of the older generations who failed to calculate the outcome of
their carelessness. We cannot turn our time to the reverse direction and rearrange
everything. But we can develop new practices for saving our earth from a
catastrophic end.
The teachers and students of Sapphire International School, have always been
interested in developing a new scientific logic system for all the people of this
world. They keep experimenting, making projects, designing quizzes, meeting
people, organizing exhibitions, writing articles, drawing cartoons and
contributing towards the development of our nation.
This is the second issue of the science magazine of this school. This is a depiction
of the scientific awareness of the community of this school. Students and teachers
have written articles spontaneously. I fervently hope that their spirit of
unconstrained creativity printed in this magazine will be highly appreciated by the
readers. I convey my best wishes through this column.
Dhruba Das
Principal
MA, LL.B., B.Ed.
Sangit Prabhakar, Sangit BivakarExaminer, University of Cambridge, London
1
Fiction Follows Facts
It is a peaceful place in the suburbs of
South America.
On a bright and pleasant afternoon, Leona
is going to play in the nearby park with her
friend Nancy. While going towards the
park, they cross a place full of bushes laden
with blue lobelias. The sight of a golden
butterfly attracts Leona's attention and she
follows it. Her friend Nancy calls after her and
moves towards the park. The butterfly leads Leona to a distance
where she finds a plant looking like a pitcher and sees a tiny creature
almost going to get trapped and entangled into the tendrils of that
plant. Leona stops short and picks up the creature in her hand. It is the
smallest monkey kind of a creature she has ever seen in her life. It is
looking so cute with its brownish gold fur with grey patches on its back
and head and yellowish orange colour on its stomach. Its tail has black
rings and its face has flecks of white on its cheek. She starts looking at
it more closely and finds a white vertical line between its eyes. It is
rotating its head and looking at Leona. Its sharp claw like nails are
resting on her palm but they are not hurting her as if it has realized that
she is a friend. Leona feels so excited. She forgets about going to the
park to play. But her excitement is becoming too difficult for her to
contain. She wants to share it with someone. She runs towards home.
She
sees her mother sitting and knitting near the fireplace in
the living room. She knows her mother would never
appreciate the idea of keeping a creature of any
kind at home. She tiptoes towards the study.
Asley, her elder brother is at the table
preparing for his forthcoming examination.
He is very studious and Leona sometimes
envies his stamina and intelligence. She
enters through the door which is left ajar,
locks it from inside and reaches Asley's side.
She whispers something and sets down the
creature on his study table. “Oh Leona!”
2
Asley almost shouts,
“Where did you get it
from?” She tells him
everything. As he hears,
Asley's eyes brightens up and he
explains, 'You know Leona, it is a
rare variety of the smallest monkey or primates
known as Pygmy marmoset. The plant you are
talking about must be a pitcher plant. It is a carnivorous
plant. “Carnivorous! How can it be?” Leona exclaims.
'Yes, it has modified leaves known as pitfall traps. It has a
prey trapping mechanism. It also has a deep cavity filled with
liquid. Its leaves are exceptional. Pitcher like shapes are borne at
the end of the tendrils. These pitcher plants are often climbers.
The small bodies of liquid contained within the pitcher traps are
called phytotelmata. These plants drown the insect and the body
of it is gradually dissolved.” 'Oh!' Leona exclaims wide eyed. She
is listening with rapt attention. She is feeling proud of Asley, who
knows so much. She shudders at the thought of the little creature
being drowned in the pitcher plant's liquid. It must be acting as
acid. Such a dangerous death was awaiting this cutie pie! She
looks lovingly at the pigmy marmoset and touches its fur lightly.
It looks at her as if thanking her for saving its life. 'Dear brother,
how to convince mom to keep it with us? Please find out a way.'
Her brother smiles and nods. 'What name do you suggest for it?'
She enthuses. Asley gives a quiet smile of understanding. He can
feel his sister's enthusiasm percolating in him gradually.
Suddenly someone says from behind, 'Call it Pompom'.. Both
look back with a start to find Feona, their mother standing and
smiling at them. She picks up 'Pompom' and strokes it with loving
care. Both her children have tears of unexpected happiness in
their eyes. They both say together 'Mom, you are adorable. We
love you'.
So little Pompom gets ushered into a loving family. But I can't say
whether it lived happily ever after or missed the wilderness.
Madhumita Banerjee
Vice Principal
3
Science of Yoga
Yoga is the product of perennial
wisdom of India. It is considered as
science of breathing and is developed by
observing basic aspects of nature. It is
reflected in various asanas and postures of
yog
a. Yoga is leading to harmony which is an amalgam of purpose of life
and method of living. It has various aspects like asanas, pranayama,
dhyana which balance endocrine and nervous system. This balance is
very much required for the overall maintenance of internal organs of
the body.
Yoga improves overall functioning of body parts. It acts as effective
stress buster and improves circulation of blood in the body. It brings
about better neuro-muscular coordination and strengthens the
immunity of the body. It makes all the necessary corrections in
different aspects of well being i.e. physical, social and psychological
health. It enhances the endurance to face abnormal situations.
Biochemically, yoga has numerous positive effects on body fluids. It
decreases the glucose and sodium level in the blood. Cholesterol types
like LDL and VLDL are decreased by yoga. Haemoglobin content and
level of thyroid hormones are maintained by yoga. Yoga also has
influential effect on the metabolism of calcium and other nutrients.
Physiologically, yoga stabilizes the autonomic nervous system. It
maintains the pulse and respiratory rate. It increases the cardiomuscular efficiency. Digestive enzymes and hormones are secreted in
normal quantity.
Meditation and Pranayama is very effective in anxiety and stress
disorders. Meditation helps in balancing neurotransmitters. It is found
to be associated in treating various chronic diseases. Practice of
meditation increases activity in left prefrontal lobe of the brain - an
area associated with positive emotions, self control and calm
temperament. In Pranayama, the free acid radical content in the blood
reduces because of reduced oxidation process. It reduces the
secretions of stress hormones and maintains the Basal Metabolic Rate.
Vaibhav Misra
Department of Science
4
Facts on Technology
Our lives revolve around the technology. Our
dependency on technology is growing day by
day. There is always something new being
presented to human beings when it comes to
technology, and we never cease to become
bored of it.
Few interesting facts about technology are:
1. The majority of computer users blink 7 times per minute at
most, compared to the normal blink rate of 20 blinks per minute.
2. Email was invented before the web; which means that it has
been around longer.
3. The home of Bill Gates was designed with the use of a
Macintosh Computer.
4. On a regular work day for a typist, his fingers travel at an
average rate of about 12.6 miles per day.
5. The state of Alaska is the only state whose letter can be typed in a
straight row of keyboard letters.
Name: Akansha Arsia
Class: XI Sc.
5
Fascinating bird facts
1. The bones of a pigeon weigh less than its feathers.
2. Kiwi birds are blind. They hunt by smell.
3. A flamingo can eat only when its head is upside down.
4. Humming bird is the only bird that can fly backwards.
5. The woodpecker has a 'shock absorber' head.
6. The kingfisher is the largest bird that can hover and stay still in
the air.
7. Mocking birds can imitate any sound from a squeaking door to a
cat meowing.
8. A turkey's head changes colours when it becomes excited.
9. There are more chickens in the world than people.
10. Golden plover can fly non stop over thousands of miles of open
oceans.
Name: Priyanka
Class: XI Sc.
Some Interesting facts
1. The word 'scientist' first appeared in 1833.
2. Eating Salmon helps hair grow faster.
3. Rain contains Vitamin B12.
4. If you could fold a piece of paper 50 times, its thickness would
exceed the distance from here to sun.
5. 41 new species are discovered by scientists every single day.
Name: Sanskar Agarwal
Class: X C
6
Let's Know More
Do you know how many states of matter are there?
Three but now scientists say there are five. Which are they?
They are:
(I) Plasma: The state consists of super
energies and super excited particles.
These particles are in the formal
ionized gas. These gases get ionized
when electricity runs through them.
This is used in Neon Bulbs or Neon
hoardings. It glows with a spectral
colours according to the nature of the
gas. Stars and sun also glow because of the presence of plasma in
them. Plasma is created there because of very high temperature.
(II) Bose: Einstein Condensate:- In
1920 Indian Physicist Satyendranath
Bose had done some calculations for
the fifth state of matter. Building on
his calculations, Albert Einstein
predicted new state of matter – The
Bose – Einstein Condensate (BEC).
In 2001, Eric A. Convell, wolfgang
Letterle and Carl E. Wieman of USA
received the nobel prize for achieving the BEC. It is formed by a
cooling gas of extremely low density about 1 hundred thousandth
of the density of normal air, to super low temperature.
Name: Chaitanya Jalan
Class: IX C
7
A poem on our Solar system
The moon shines so very bright,
Especially on a crisp clear night,
The sun is big and hot,
And also covered in little spots,
Mercury is quite small,
Against the sun it's a tiny ball.
Venus is cloudy like a rainy day
But too much to go out and play.
The earth is blue and nice,
and this is the place where I spend my life.
Mars is next and so red,
But there is no life and is completely dead.
Jupiter is the biggest of them all,
But is just a giant gas ball.
Saturn looks cool with its enormous rings
It's the solar system's ultimate 'BLING BLING’
Uranus always gets a laugh,
But it really isn't quite that drift
Neptune is next upon the list,
With its almost invisible disc.
Now we have come so very far
from our friendly yellow star.
We come to Pluto which some do say
It isn't a planet anyway!
Name: Mahi
Class: VII A
8
Do you know ?
Do you know that humans are the only animals who cook?
A new born rhinoceros weighs upto 60 kilograms.
One year on Jupiter is equal to 12 years on Earth.
Jupiter is so large that all the other planets in the solar system
could fit inside it.
Name: Abhay Tibrewal
Class: VIII B
Different Branches of Science
1. Anthropology
– Study of apes and men.
2. Cytology
– Study of cells.
3. Dermatology
– Study of skin
4. Floriculture
– study of flower yielding plants.
5. Gerontology
– Study of growing old
6. Myology
– Study of muscles.
7. Obsterics
– Branch of medicine dealing with pregnancy.
8. Phycology
– Study of algae.
9. Taxonomy
– Study of classification of organisms.
10. Virology
– Study of virus
9
Scientists
John Dalton
John Dalton was born in a poor weaver's family in 1766 in
England. He began his career as a teacher at the age of twelve.
Seven years later he became a school principal. In 1793, Dalton left
for Manchestor to teach Mathematics, Physics and Chemistry.
J.J. Thomson ( 1856 – 1990)
J.J. Thomson, a british physicist, was born in Cheetham Hill, a
suburb of Manchestor, on 18 December 1856. He was awarded the
nobel prize in Physics in 1906 for his work on the discovery of
electrons. He directed the Cavendish Laboratory at Cambridge for
35 years.
E. Ruther Ford (1871 – 1937)
E . Ruther Ford was born at Spring Grove on 30 August, 1871. He
was known as the 'Father of Nuclear Physics'. He is famous for his
work on radioactivity and the discovery of the nucleous of an atom
with the gold foil experiment.
Neils Bohr (1885-1962)
Neils Bohr was born in Copenhagen on 7
October 1885. He was appointed as a
professor of Physics at Copenhagen
University in 1976. He got the Nobel
prize for his work on the structure of
atom in 1922.
Name: Shashank Shekhar
Class: IX B
10
Information on new technology
Today technologies are playing a very important
role in almost every field. Whether be it
industrial, IT sector etc, it is not possible to list all
the new technologies as human beings develop
new technology day by day. But some of these
new technologies are robots and driverless cars.
In recent research it has been found that within
ten years, the robots will be capturing 40% of the
jobs. It is estimated that robots can do the jobs as
mechanic, security guard and many other things
also. Recently google has also tested driverless
cars, and become successful in it. Within few
years, this car will be launched in the market.In
Taiwan a new electronic scooter has been
launched whose battery can be charged. It has
been launched by a company GARGO. Its price
is around 4,140 $.New Technologies should
come up for the advancement of human beings.
Name: Pranay
Class: X B
11
Acid 'O' Facts
Acid
Acetic Acid
Butyric Acid
Citric Acid
Tannic Acid
Hydrochloric Acid
Oxalic Acid
Lactic acid
Malic Acid
Tartaric Acid
Succinic Acid
Oleic Acid
Palmitic Acid
Stearic acid
Uric Acid
Formic Acid
Ascorbic Acid
Nitric Acid
Sulphuric Acid
Phosphoric Acid
Boric Acid
12
Source
Vinegar
Rancid Butter
Orange, Lemon
Tea
Gastric Juice
Tomato, Guava
Curd
Apple
Tamarind, Grape
Grape
Olive Oil
Fats
Fats
Urine
Red Ants
Orange, Lemon
Rain Water
Batteries, Alum
Fertilizer
Detergents
Wonders of Biology
Largest in the World
Virus
Cell of the Body
Artery
Vein
Cell
Tooth
Muscles
Bone
Vertebra
Flower
Mammal
- Parrot Fever Virus
- Neuron
- Abdominal Aorta
- Inferior Vena Cava
- Ostrich egg
- Tusk of Elephant
- Gluteus Maximus
- Femur
- Lumbar Vertebrae
- Rafflesia
- Blue Whale
Smallest in the World
Bacteria
Bird
Bone
Flower
Mammal
Muscles
- Dialister Pneumosintes
- Humming Bird
- Stapes
- Wolffia microscopica
- Shrew
- Stapedius.
Name: Amar Kumar Gupta
Class: X B
13
Organic Farming - A key to sustainable agriculture
“Nature has enough for
everyone's need but not for
anyone's greed” – M.K.
Gandhi
Mother Nature is getting
exhausted by the use of modern
day agricultural techniques
where human being has been
dragging the capacity of
mother nature beyond its limits
by excessive use of chemical fertilizers, pesticides, fungicides etc.
Now it's high time, where we have to return to the primitive era and
merge the modern applications with the traditional practices for the
term 'Organic farming' which is in harmony of the nature for both
human health and environment.
The British botanist, Sir Albert Howard, who is often regarded to as the
father of modern organic agriculture advocated that traditional Indian
and Chinese farming practices are superior to the conventional
agriculture.
ANIMAL HUSBANDRY WASTE PRODUCTS
SOLAR POWER
MULCHING
ORGANIC FARMING
BIO FERTILIZERS
VERMICOMPOST
MANURE
BIO PESTICIDES / BIO FUNGICIDES
Due to conventional agricultural practices, the lands have started
losing fertility and demanding larger use of fertilizer, pests become
immune requiring stronger pesticides.
Good news is that owing to increased cost of farming with
environmental and health issues, farmers in India are shifted towards
organic farming.
14
In India 70% population depends upon agriculture and organic
farming and can produce more job opportunity especially for less
skilled labours estimated to be 15% more than conventional farming
due to strip farming, non chemical weeding, production, collection
and transportation of organic supplements.
Organic farming aims at producing high quality food in sufficient
quantity; increasing biological cycles involving microbes, soil, flora
and fauna, maintaining long term soil fertility and genetic diversity of
the production system and its surroundings including plant and wild
life; promoting healthy use with proper care of water resources,
creating harmony between crop production and animal husbandry
and foremost important minimizing pollution.
“Soil in this system of farming is a living entity”. So think of organic
farming – your future relies on it.
Pulak Kumar Roy
Department of Science
Cathode Rays
The first moving television images were
produced by John Logie Baird in 1924
and as such he was credited as the
inventor of television. However, the Marconi – EMI-all electronic
methods of providing moving images for outstripped Baird's
mechanical method. In 1934, the BBC dropped Baird's method and
adopted the Marconi EMI Method. The BBC made its first regular
television broadcasts in 1936, although they were suspended on the
outbreak of the Second World War.
The first colour broadcast was made in the USA in 1951, although it
was not until 1967 that the BBC made their first colour transmission.
Television Images are formed by Cathode rays hitting a fluroscent
screen. The early sets were quite bulky and used a lot of energy.
Today, flat screen, televisions using LCD ( liquid Crystal Display).
LEDs and Plasma screens are increasing in popularity.
What is the future? The dream must be of 3D TV. Some experts
predict that the first demonstration model will be available within
the next three years but others think fifteen to twenty years is a more
realistic estimate.
15
Abhas Kumar
Department of Physics
Short Biography of
Camillo Golgi
Camillo Golgi was born at Corten near Brescia in
1843. He studied medicine at the University of Pavia.
After graduating in 1865, he continued to work in Pavia at the
hospital of St. Matteo. At that time most of his investigations were
concerned with the nervous system. In 1872 he accepted the post
of Chief Medical Officer at the hospital for the chronically sick at
Abbialegrasso. He first started his investigations into the nervous
system in a little kitchen of that hospital, which he had converted
into a laboratory. However, the work of greatest importance which
Golgi carried out, was a revolutionary method of staining
individual nerve and cell structures. This method is referred to as
the 'Black Reaction'.
This method uses a weak solution of silver nitrate and is
particularly valuable in tracing, the processes and most delicate
remifications of cells. All through his life, he continued to work on
these lines modifying and improving this technique. Golgi
received the highest honours and awards in recognition of his
work. He shared
the Nobel Prize in 1906 with
Santiago
Ramony Cajal for their work
on the
structure of the nervous
system.
Name: Pratik Kumar
Class: X B
16
Unsafe Indian Roads
India accounts for about 10% of road
accidents fatalities in the world. Every six
minutes one person dies on the road in
India. Ten persons are injured. Unsafe Indian roads have been death
traps for the general public. The collision between the contractors
and the officials ensures that only 10% of the allotted money goes in
making the roads. The rest of money goes into the pockets of
officials and contractors. The roads can't stand even one rainy
season. Uneven surface and many potholes make them sure traps
for accidents and even death. The need of the hour is to improve the
road infrastructure and constructions. Road design should integrate
all modes of transport like bus, lorry, two wheelers, car and also the
pedestrians.
Unfortunately, we don't have separate lanes for cyclists. In rural
areas the condition of roads is still more deplorable. Another major
cause of accidents is that pedestrians in India are left on their fate.
Many roads don't have footpaths for the pedestrians. In crowded
towns and cities at most of the places there are no overbridges for
the pedestrians. Nor are there subways for the safe and secure
crossing of the pedestrians. Pedestrians should also realize that they
too are bound by traffic rules.
Last but not least, the lack of proper road culture in India is another
cause of accidents on Indian roads. Strict rules should be enforced
before issuing driving licences. Better traffic signalling and
controlling equipment should be adopted. Make it one way
wherever necessary to avoid congestion. Place proper traffic signs
specially the Bump Ahead’ so that the people may get an idea what
is ahead of them. And above all drinking and driving must not be
allowed to go together.
Better roads and still better road-culture can save many precious
lives every year.
Name: Sachin Kumar
Class: XI Sc.
17
Biggest and Smallest animals
Birds: The bee humming is the smallest bird. It's
not longer than one of your fingers, 5 cms long.
The ostrich is the biggest bird. It's taller than a tall
person.
Reptiles: The West India gecko is 5 cms long.One
type of West India gecko is so small that it can take
a nap in a tablespoon. The reticulate python is one
of the longest reptiles .It's as long as six bicycles in
a row.
Mammals: The Kitti 's long nosed bat is the
smallest mammal. It's no longer than a bumble bee.
It is the largest mammal. It's as long as five
elephants in a row.
Arthopods: A mite is the smallest Arthopods.It is
smaller than the full stop at the end of this
sentence. A giant spider crab is the biggest
arthopod. Its body can reach 4mts across.
Fish: The dwarf gobby is the smallest fish .It's not
longer than your fingernail about 1cm long.The
whale shark is the biggest fish. It's a little longer
than a sailor's goods carriage.
Amphibians: The Cuban tree frog is the smallest
amphibian.It's about the size of a small coin or 1cm
long. The giant salamander is the biggest
amphibian. It's about as long as a bicycle.
Name: Ayush Issac Kandir
Class: IV A
18
Some amazing facts
Plasma was first named “plasma” in
1928 by Lrring Langmuoi because it
reminded him of his blood plasma.
The sun fuses 620 million metric tone of
hydrogen per seconds.
Assuming that the universe continues to expand, it is thought that in
10^19 to 10^20 years the galaxies will evaporate.
On March 1 ,2010,NASA announced that the moon's northern pole
contains millions of tons of water.
The sun radiates as a 600k black body in the optical range but can
have a blackbody temperature of over 10^0k at radio frequencies.
Name: Lakshya
Class: IX
Latest inventions:
Three dimensional printing:
It is created by the inventors Max Bogue and Peter Dilworth who have
invented this unique pen that can be used as a drawing device in the air.
A colourful spool of plastic thread is fed into the pen. It allows you to
draw solid 3 dimensional structured figures on any surface. The pen is
called a 3 doodler. It requires no technical knowledge or software and
plugs into an electrical, outlet. They expect to fulfil those orders and
launch the product in the fall of this year. This pen is easy to handle
efficiently.
19
Name: Atishay Tripathi
Class: X C
Riddles
1. Sky flashes before my arrival. What am I?
2. What can you catch but cannot throw?
3. If an electric train is travelling towards south, which way does the
smoke go?
4. Many have heard it, but nobody has ever seen it and it will not speak
back until spoken to. What is it?
5. I am tall when I am young and I am short when I am old. What am I ?
Name - Uttkarshita
Class – VII B
Note: Find the answers on page 22
Some Amazing Facts
Rabbits and parrots can see behind themselves without even
moving their heads!
Butterflies taste food by standing on top of it! Their taste receptors
are in their feet unlike humans who have most on their tongue.
Most of the dust in your home is actually dead skin! Yuck!
Although the Stegosaurus dinosaur was over 9mts long, its brain
was only the size of a walnut.
Because of the unusual shape of their legs, kangaroos and emus
struggle to walk backwards.
Name: Akash Jaiswal
Class: VI C
20
Amazing fact
1. If you drilled a tunnel straight through the earth and jumped in , it
would take you exactly 42 minutes and 12 seconds to get to the
other side.
2. Single bolt of lightning contains enough energy to cook 100,000
pieces of toast.
3. The average person walks the equivalent of three times around the
world in a lifetime.
4. If you drive your car straight up, you will arrive in space in just over
an hour.
5. The human brain takes in 11 million bits of information every
second but is aware of only 40 bits.
6. A red blood cell can make a complete circuit of your body in 20
seconds.
Name: Venkatesh Raman
Class: XI Sc.
21
Benefits of technology
The number one benefit of technology is
that it empowers people to do what they
want to do. It lets people be creative,
productive and learn things. They don't
think they can learn before, and so in a
sense it is all about potential.
There are many latest and amazing facts
of technologies. There is an exoskeleton
that can be controlled by mind. It's
helping paralyzed people to regain the
ability to walk. A man named James
Harrison needed 13 litres of blood for
surgery at the age of 13. Once he was 18, it was found that his blood
contained a rare antigene which cured rhesus disease. He had donated
blood a record 11,000 times and saved 2,000,000 lives.
World's first Bionic eye prototype has been released in Monash
University. We can print 3-0 nylon polymer prosthetus strong enough
to emulate a bone. It was used on an eagle which lost its beak in an
attack by hunters.
There is a 3-0 printed ear with actual external components to allow
auditory procausing for deaf people. Nigel Ackland has been fitted
with the terminator – like carbon fire mechanical hand which can
control monuments in his upper arm.
Name: Surangma Tirkey
Class: XI Sc.
22
Answers:
1. Thunder
2. Cold
3. There is no smoke, it’s an electric Train
4. Echo
5. A Candle
Easy way to memorise Mathematical Table
Hello friends,
Most of you find very difficult to memorise mathematical tables
and have fear of Mathematics due to which maximum marks are
lost from your final grade.
Don't worry I am giving you an easiest way to memorise the
multiplication tables of all 2-digit numbers from 10 to 99 and the
same could be followed over three digits too.
The thing is that only you have to memorise the table from 1 to 9
and then follow the magic.
Step 1. Write all multiplication table of each digit row wise upto 10
as shown below. Consider an example of 87
1
2
3
4
4
5
6
7
8
8
6
4
2
0
8
6
4
2
0
1
2
2
3
4
4
5
6
7
7
4
1
8
5
2
9
6
3
0
8
16+1
24+2
32+2
40+3
48+4
56+4
64+5
72+6
80+7
7
4
1
8
5
2
9
6
3
0
87
174
261
348
435
522
609
696
783
870
Step 2. Add all the tables of tens place digit with the digits of tens
place of unit place table.
Isn't it easy?
You can get the same for any two digit numbers and the same could
be followed for three digit number i.e.
write
multiplication table of unit place and then the table of
number formed by tens and hundreds place. Follow
the method to get multiplication table of 3-digit
numbers.
Arif Ali Ansari
Department of Mathematics
23
How to study Physics
First of all check the syllabus of the concerned exam.
Check the units & their respective topics. Divide each
unit in the different parts like- definitions, principle,
construction & working numerical i.e. formula & their
calculation. This is the theoretical part of the subject. Other
side is practicals. It is easy to get good marks in practicals.
Complete all the experiments, project activities, viva & calculation diagrams in
the practicals.
Now come to hit the theory. Check the weightage of the units.
Select the topics of unit and make simple notes with the help of books or
internet.
Simplify the calculation and draw diagrams. Diagrams should be neat.
Write down the formulae of the unit. Define all the formulae thoroughly. Then
you can do numericals easily.
Repeat the same things in all the units. Go through last ten years questions &
solve them repeatedly.
Definitely you will get success in the exam. As you reach the last units revise the
in between quite frequently.
You should have thorough practice in numerical/calculations/definitions of the
experiments.
Rajiva Kumar
HOD, Physics
Odds & Evens
D for denominator
D for down
F for Fraction all around.
Starts with D
Near the ground
D for denominator
D for down.
N for Numerator
Starts with N-U for never under
When it comes to writing fraction right, it is never
under. That's so right.
Numerator is right on top.
Fraction writing just can't be stopped.
24
Kaninika Bose
Department of Mathematics
SAPPHIRE INTERNATIONAL SCHOOL
12th Milestone, Ranchi-Khunti Road, Hardag, Ranchi-835221
www.sisranchi.com