NCERT Solutions for Class 9 English Chapter 4 A Truly Beautiful Mind

Einstein called his desk drawer at the patent office the ‘bureau of theoretical physics’. He called it so because he was secretly developing his own ideas and inventions related to physics.

 Einstein wrote a letter to Franklin Roosevelt because he wanted to warn America that Germany had the ability to build and use an atomic bomb, which if exploded in a port, would destroy the entire port as well as some of the surrounding territory.

He was deeply shaken by the extent of destruction due to the bombing of Hiroshima and Nagasaki. He wrote a public missive to the United Nations and proposed the formation of a world government.

The world remembers Einstein as a “world citizen” because he agitated for an end to the arms buildup and campaigned for peace and democracy in the world.

(i) Einstein’s equation – 9

(ii) Einstein meets his future wife – 7

(iii) The making of a violinist – 3

(iv) Mileva and Einstein’s mother – 10

(v) A letter that launched the arms race – 15

(vi) A desk drawer full of ideas – 8

(vii) Marriage and divorce – 11

(i) He was boring – Einstein’s playmates

(ii) He was stupid and would never succeed in life – Einstein’s headmaster

(iii) He was a freak – Einstein’s mother

(i) Einstein left the school in Munich for good because he disliked the school’s regimentation and often had arguments with his school teachers.

(ii) Einstein wanted to study in Switzerland rather than in Munich because Switzerland was a city that was much more liberal than Munich.

(iii) Einstein saw an ally in Mileva because just like him, she too was against ‘Philistines’, i.e., the people in Einstein’s family and at the university with whom he was constantly at odds.

(iv) The above things tell us that Einstein was a very liberal person who liked freedom. He was a person who had his own views about life.

[7] Einstein publishes his special theory of relativity. [9] He is awarded the Nobel Prize in Physics. [11] Einstein writes a letter to U.S. President, Franklin D. Roosevelt, and warns against Germany’s building of an atomic bomb. [2] Einstein attends a high school in Munich. [3] Einstein’s family moves to Milan. [1] Einstein is born in the German city of Ulm. [5] Einstein joins a university in Zurich, where he meets Mileva. [12] Einstein dies. [8] He provides a new interpretation of gravity. [4] Tired of the school’s regimentation, Einstein withdraws from school. [6] He works in a patent office as a technical expert. [10] When Hitler comes to power, Einstein leaves Germany for the United States.

i)  A few years later, the marriage became weak. (failed, broke, became weak).

ii) Einstein was constantly in disagreement with people at the university. (on bad terms, in disagreement, unhappy)

iii) The newspapers declared his work as “a scientific revolution.” (declared, praised, showed)

iv) Einstein got ever more involved in politics, campaigning for an end to the arms build-up. (campaigning, fighting, supporting)

v) At the age of 15, Einstein felt so stifled that he left the school permanently. (permanently, for his benefit, for a short time)

vi) Five years later, the discovery of nuclear fission in Berlin had American physicists in a state of commotion. (in a state of commotion, full of criticism, in a desperate state)

vii) Science wasn’t the only thing that interested to the dashing young man with the walrus moustache. (interested, challenged, worried)

1. Working round the clock, the firefighters finally put out the fire. (They worked round the clock.)

2. She watched the sunset above the mountain, noticing the colours blending softly into one another. (She noticed the colours blending softly into one another.)

3. The excited horse pawed the ground rapidly, neighing continually. (While it neighed continually.)

4. Having taken the wrong train, I found myself in Bangalore, instead of Benaras. (I had taken the wrong train.)

5. Having not bathed for two days, I was desperate to get to the bathroom. (I had not bathed for two days)

6. The stone steps, being worn down, needed to be replaced. (They were worn down).

7. The actor received hundreds of letters from his fans, asking him to send them his photograph. (They asked him to send them his photograph.)

Student Unearths Einstein Manuscript

21 AUGUST 2005. An original handwritten Albert Einstein manuscript has been unearthed at a university in the Netherlands.

It was unearthed by a student Rowdy Boeynik while researching papers belonging to an old friend of Einstein.

The 16-page document dated 1924 contained fingerprints of Albert Einstein. It has Einstein’s work on this last theory, i.e., the behaviour of atoms at low temperature which is now known as the Bose-Einstein condensation.

The manuscript will be kept at Leyden University where Einstein got the Nobel Prize.

Do it yourself.

The poet contrasts the natural beauty of Innisfree with the roadways and grey pavements of the city he now lives in. “Grey” pavements show the lack of colours and liveliness of the place.

 Innisfree is a beautiful place where poet has spent a lot of time as a boy.

(i) The three things the poet wants to do when he goes back to Innisfree are:

– he wants to build a small cabin of clay and wattles.

– he wants to have nine bean-rows there

– he wants to have a hive for the honeybee

(ii) He hears the cricket sing and sees the midnight glimmer with beauty. He sees the sky glowing purple at noon. He watches the evenings full of the linnet’s wings.

All of these have a positive effect on him and he feels very peaceful.

(iii) He hears the lake water lapping by the shore at low sounds in his “heart’s core” even when he is far away from Innisfree.

Yes, I think Innisfree is a place in reality. The poet actually misses the place of his boyhood days spent in the natural beauty of Innisfree. He gets reminded of the low sounds of the lake water lapping by the shore. He misses both the place and the peace and contentment the place used to give him.

(i) bee-loud glade creates a picture of a place in a forest that is filled with the soft buzzing sound of honeybees.

(ii) evenings full of the linnet’s wings creates an image of a red-orange sky that is full of linnets. Linnets are beautiful birds that add up to the scenic beauty of a place when they flutter their wings and fly.

(iii) lake water lapping with low sounds lets us take a dive into the peaceful scenario where the water of the lake is flowing and producing soothing sound.

These words mean that one can attain peace slowly and gradually.

Peace is what comes dropping slow from the veils of the morning.

The poet says that peace and serenity spread gradually from the rising morning sky to the ground where the cricket sings.