May 18, 2020

KINEMATICS-2 (MASTER ADVANCED PHYSICS)

KINEMATICS-2 (MASTER ADVANCED PHYSICS)
MASTER ADVANCED PHYSICS 
(For all Top Exams) 

Video – 2 
KINEMATICS – 2

Acceleration –

Change in velocity

Uniform acceleration

Rate of change in velocity is constant

Change in Velocity in one second.

V= 0 t= 0

V= 10 t= 1

V= 20 t= 2

V= 30 t=3

A = 10m/s /s

Equations of motion for uniformly accelerating body

U, v, a, S, t

V – u / t = a or v = u + at

S = ut + ½ a t*t

V2 – u2 = 2as

Derivation of the three equations

V= u + at is by definition true

(U + v) / 2 = average velocity = s / t

Ut + vt = 2s

Ut + (U + at)t = 2s

Ut + ut + at 2 = 2s

Dividing by 2

S = ut + ½ at2

With the first two equations we can get

V2 – u2 = 2as

by simple substitution

Displacement – time graph for uniformly accelerated motion

Graph – parabola


Velocity – time graph for uniformly accelerated motion

Graph – slanted straight line


May 17, 2020

KINEMATICS-1 (MASTER ADVANCED PHYSICS)

KINEMATICS-1 (MASTER ADVANCED PHYSICS)

Master Advanced Physics 
(For all Top Exams) 

Video – 1 
Kinematics – 1 

Statics – 

Study of bodies when not in motion 

Kinematics – 

Study of bodies when in motion but without considering the forces and the causes of motion 

Dynamics – 

Study of motion of bodies while considering the forces 

Rest and motion 

Motion in one Dimension 

Motion in 2 Dimensions 

Motion in 3 Dimensions 

Distance and Displacement 

Distance is the actual distance traveled by a body 

Displacement is the shortest / straight line distance covered by a body 

Speed and Velocity – 

Speed is distance covered in one second 

Velocity is displacement covered in one second 

Speed = d / t ……. Velocity = S / t 


Average speed and instantaneous speed 

Average speed = TOTAL distance / Total time 

Instantaneous speed is exactly speed at that point/moment of time 


Average velocity and Instantaneous velocity – 

Average Velocity = TOTAL displacement / Total time 

Instantaneous Velocity is exactly velocity at that point/moment of time 

Uniform motion in a straight line 

Position time graph 

Velocity time graph

Position time graph 




Velocity time graph


WILLIAM BLAKE AND HIS POEM TYGER


WILLIAM BLAKE AND HIS POEM TYGER


William Blake – His Life and Genius 

William Blake was born on the 28th of November, 1757, in London and died on the August of 1827. He was a great visionary poet, artist and engraver and is regarded as one of the greatest Romantic poets, but with very unique gifts of vision, spirituality, originality and intense seeking of truth and meaning. 

He was the author of the following famous books. 

Songs of innocence (1789) 

Songs of Experience (1794) 

Visions of the Daughters of Albion (1793) 

The first book of Urizen (1794) 

Milton (1804) among others. 

These works he etched, printed coloured, stitched, and sold, with the assistance of his devoted wife, Catherine. Among his best known lyrics today are “The Lamb,” “The Tyger,” “London,” and the “Jerusalem” lyric from Milton, which has become a kind of second national anthem in Britain. 

Blake was born over his father’s modest hosiery shop at 28 Broad Street, Golden Square, London. His parents were James Blake (1722–84) and Catherine Wright Armitage Blake (1722–92). 

His father was his mother’s second husband. 

He had a distinct and very deeply influential Christian upbringing. He is reported to having seen angels and god, and saints while awake. Such visions came from his burning combination of secularism, the desire to SEE things by himself, and belief in God and paradise. 

He was regarded as mad in his lifetime, but by the 21st century he has been hailed, in fact, as the greatest of Romantic poets. 

He did not have children and he had an extremely devoted wife, Catherine. He had to struggle for a living. He had an intense desire to be an artist full time, and had shown tremendous talent early on. But, due to his finances, he could not become an artist and, instead, became a skilled engraver. 

He took to writing and he himself made his own books beautifully engraved, etched and bound by his own hands. 

He wrote marvelous poems but due to the strange character and extreme originality of his works, he could not get the recognition he deserved. In fact, people sadly dismissed his thinking as a kind of madness. 

He died at the age of 69, in August 22, 1827. 

Social and Political Background and Romanticism 

The 1700 – 1800 years were turbulent, intellectually stimulating and intensely creative and those years witnessed two great revolutions, the American and French revolutions. 

They were years of very deep transition from long held tradition and habit of faith and servility to the newly emerging scientific and enlightening outlook. 

It had all the passion, suffering, intensity, questioning, confusions, anarchism of a transition, yet, it was a period where man was being finally liberated from the shackles of religion after long ages of being ruled by religious authority and leading dull and dry lives. 

Great thinkers and philosophers emerged in this period and the greatest of literary movements was that of ROMANTICISM. 

This movement had great writers, like Byron, Keats, Victor Hugo, Wordsworth and also Blake and many others. 

Each was very unique but all had a single thing in common- a deep and intense concern as to the meaning of life, the fire to pursue that question by one’s own self, to see and think and observe to truly get the truth. 

It was both liberating and agonizing!! But it changed the world. Man matured and flowered and this movement paved the way for the full emergence of the world of today that is far more enlightened than all the centuries of the past put together. 


THE MEANING AND SIGNIFICANCE OF THE POEM, TYGER 

Let us go directly to the poem, and understand the mind, heart and soul and visions, concerns, and sense of life of William Blake. 

Let us analyze, sense, and feel each line, and also let us draw out its inner meaning from the genius of expression of William Blake. 

TYGER 

Tyger! Tyger! Burning bright in the forests of the night 

As you can see, in just this one line, we have two times, the “tiger” word being used, and with exclamations. The poet is drawing our attention to what we all have seen but never really SEEN, fresh and as if seen for the first time!! 

Here come two words- burning and bright. So, both words together, give us a blinding sense of shine, fire, of the skin of the tiger, and also the word “burning” means passionate, aggressive and powerful. The poet is making us almost SEE the tiger as a NEW VISION!! 

Then you have the words- “IN THE FOREST OF THE NIGHT”. 

What do these words really mean? 

What does “forest OF the NIGHT” mean? 

It means aloneness, and fearlessness and supreme individuality and power. It shows that the tiger is not soft, dependent and needy. It is IN THE FOREST OF THE NIGHT!! 

So much has been conveyed with the powerful first line itself. 

What immortal hand or eye could frame thy fearful symmetry? 

Now the poet is asking, with a fear and wonder, WHICH could make something so beautiful and fearful. He is feeling a great awe at a GOD, or creator, or rather THAT METAPHYSICAL MYSTERY, DREAD AND WONDER, OF who could have the vision to create something so terrible and yet so wonderfully beautiful. 

The poet is now taking his own seeing of a tiger to the highest metaphysical plane of reflection. He is indirectly, deeply and sincerely wondering about and questioning god himself!! 

Who made this tiger? The poet is asking, THIS kind of incredible beast? 

In what distant deeps and skies burnt the fire of thine eyes? 

Here the poet continues, and is asking in which paradise were these eyes made. He is bringing again that feeling of terrible wonder in looking at the tiger. 

On what wings dare he aspire? What the hand dare seize the fire? 

And what shoulder, & what art, Could twist the sinews of thy heart? 

Now the poet is going deeper into wondering about that creator, who made this tiger. What wings, what hand had to catch such a fire, and what shoulder had to make the heart? 

And when thy heart began to beat, 

What dread hand? 

And what dread feet? What the hammer? 

What the chain, in what furnace was thy brain? What the anvil? 

Here the poet is continuing to talk about such a tremendous process of creating the tiger by comparing to furnace. He uses words like hammer, chain, and anvil. 

What dread grasp, dare its deadly terrors clasp! 

Here the poet talks about how a creator could HOLD such a terrifying and powerful beast that is the Tiger. 

When the stars threw down their spears, 

And water’d heaven with their tears, 

Did he smile his work to see? 

Did he who made the Lamb make thee? 

Here the poet is saying that even the stars gave up, with tears, and he continues to ask -did the creator who made the soft lamb, also made the tiger that is such a terrifying and beastly animal? 

Tyger! Tyger! Burning bright in the forests of the night 

What immortal hand or eye dare frame thy fearful symmetry? 

The poet repeats the beginning sentence but adds the word “dare” instead of could. He is gone now to the limit of asking- who created you? Who could dare? Who and HOW did the God make you? 

How could he hold such a power, such a terrifying beast, and how could he make the tiger, while also making the soft and meek lamb? 

Is there no good and bad? Are both the same? And he seems to even admire such a power of a creator to make such a powerful and terriying thing!! 

As we can fully feel this poem, we realize, that Blake is telling us to see reality, see that the tiger is what he is. 

He is conveying with passion and extreme wonder that reality is wild and merciless and that even the creator is merciless!! 

It is a deep wondering, questioning and leaving the answers open, letting YOU see, and think for yourself while giving YOU great eyes to SEE!! 

That is why this poem haunts people who read it. It is one of the greatest poems ever written. 

As we can see, Blake was a romantic but with far deeper questioning of a metaphysical nature. What IS reality? What is good and bad? Is there such a thing? Or is nature just fully what it IS? It is deeply scientific and spiritual at the same time. It is deeply Romantic in the true sense of that word.




*****

THE TYGER BY WILLIAM BLAKE

Tyger Tyger, burning bright, 

In the forests of the night; 

What immortal hand or eye, 

Could frame thy fearful symmetry?


In what distant deeps or skies. 

Burnt the fire of thine eyes?

On what wings dare he aspire?

What the hand, dare seize the fire?


And what shoulder, & what art,

Could twist the sinews of thy heart?

And when thy heart began to beat,

What dread hand? & what dread feet?


What the hammer? what the chain, 

In what furnace was thy brain?

What the anvil? what dread grasp, 

Dare its deadly terrors clasp! 


When the stars threw down their spears 

And water'd heaven with their tears: 

Did he smile his work to see?

Did he who made the Lamb make thee?


Tyger Tyger burning bright, 

In the forests of the night: 

What immortal hand or eye,

Dare frame thy fearful symmetry?

May 14, 2020

APPRECIATION OF “TWELFTH NIGHT” BY WILLIAM SHAKESPEARE


APPRECIATION OF “TWELFTH NIGHT” 
BY 
WILLIAM SHAKESPEARE

Let us now try to understand the meaning and beauty of the play TWELFTH NIGHT and draw out its significance. Let us more deeply appreciate that great work of art, one of Shakespeare’s great comedies. 

Plot of Twelfth Night 

Place- Illyria 

Time- After Christmas 

CHARACTERS 

Duke Orsino, Olivia, Viola (also Cesario, in male disguise) 

Seabstian, Olivia’s twin brother, Antonio, friend who helps Sebastian 

Malvolio, steward at Olivia’s household. Feste - clown 

Maria, Olivia’s maid, Sir Toby, uncle of Olivia and Sir Andrew, a Knight, hoping to marry Olivia. 

THE STORY 

A ship gets wrecked at the island of illyria. In that ship, Viola and Sebastian, who are twins, get separated and, in fact, Viola thinks that Sebastian has died, as he is not seen anywhere after the wreck. 

She decides to work for the noblewoman Olivia who lives in the island. But Olivia is not taking anyone right now. She is in mourning due to her brother’s recent death and does not also want to marry. 

So, Viola decides to disguise herself as a man and goes to work for Duke Orsino who lives in the same island. She gets employment there. 

Orsino actually is in love with Olivia but, as she is not ready to marry, has to wait. 

This is the setting of the comedy. 

Now, Orsino finds Cesario( Viola) very charming and attractive and she(he) becomes his favorite. Soon, he sends Cesario, Viola in disguise, to Olivia, with a love message. 

But here is the first twist. Olivia finds Cesario attractive and falls in love with him. But there is no Cesario. Cesario is Viola, actually a woman!! 

In the meantime, the uncle of Olivia, Sir Toby, comes to the scene to get his friend, Andrew, a Knight to woo Olivia. Olivia is not interested. 

Malvolio is the steward in Olivia’s house and he is a very strict, stern and, according to others, a spoiler of fun. 

We have Maria, the maid of Olivia, who actually is very witty, intelligent and fun loving. We also have Feste who is a clown. 

Malvolio is very critical of too much fun that Feste And Maria make in the house. To teach him a lesson, Maria copies the handwriting of Olivia, and writes a love letter to Malvolio. 

Poor Malvolio thinks he has got a great chance now to marry Olivia, and he follows the instructions in the letter to wear yellow stockings and behave in a certain way. 

In the meantime, Sebastian with the help of a friend comes back. He had not died in the shipwreck. His friend is Andrew. Sebastian comes to Olivia’s house when Viola (Cesario) is not there. Now, since Sebastian is a twin of Viola, he looks like Cesario, Viola, disguised as a man!! 

So, thinking Sebastian is Viola, Olivia proposes to him!! Sebastian is obviously stunned but he accepts as he finds that prospect interesting and quite advantageous to him. He also finds Olivia attractive. 

In the meantime, Malvolio, starts behaving strangely in front of Olivia. But he is mereley following the instructions in the love letter, playfully given to him by Maria. 

Olivia thinks he has gone mad, and they all put him in a room. Also we have now Antonio, Sir Toby’s friend, who wants to marry Olivia. Not having any other way, he challenges Cesario, to a duel. But it is Sebastian that they challenge. They think Sebastian is Cesario!! 

Sebastian wins the duel. In the meantime, Andrew wants to meet Sebastian, and he is arrested, as there was some conflict with Olivia before. 

He appeals to Viola thinking that she is Sebastian and she does not help. Andrew feels he has been betrayed. 

All this drama finally is ended by Viola and she confesses that she is not a man, named Cesario, but actually Viola and that her brother is Sebastian and not Cesario. She also confesses that she loves Duke Orsino. 

Finally, Duke Orsino, who anyway was very fond of Viols even when she was disguised as a man, is delighted to marry Viola. 

Sebastian is delighted to marry Olivia. It is revealed that Sir Toby had secretly married Maria. 

Malvolio is released from the room, as Maria confesses that she had written that love letter. 

All ends well, except for Malvolio who gets very angry and gets out of the room. 

Themes in the Story 

Pure light heartedness but with no deeper significance – 

This is seen in the twists and turns of the story and fun elements including making fun of Malvolio’s seriousness and strictness by giving him a false love letter. 

Unbiased Gender roles 

This is striking in this play. Orsino is attracted to Viola, though she is a boy. Olivia is attracted to Viols dressed as a man, though she is a girl!! Also, the women characters, like in real life, are real, not slaves or having no mind of their own. This shows that Shakespeare could show women as real, and equal to men. 

No class divisions : People are shown as equally strong. Maria is witty and intelligent though a maid. Viola as a servant boy, in disguise, is given great love and respect by Duke Orsino. Overall, all people, arte REAL, Human and not slaves or masters. 

So, the themes that emerge are - human characters, not just stereotypes, light living, love and marriage given importance, unseriousness, and no gender bias. 

Also, the absence of any grandeur or deeper themes is clearly evident. The characters are the common people we meet, and the fun is the kind anybody would find funny, but the fun is NOT overlaid by deep satire or anything. 

The dialogues are a full demonstration of Shakespeare’s genius. He makes full use of witticisms, and makes full fun of all the situations that are in the play. But he beautifully gives REALITY to all characters, as he knew that men, women, noblemen and common man, all are same and each is fully human. His characters are NOT stereotypes and stock characters. That is his genius and also the modern element in him. 

The point is Shakespeare does a great job of that. He had a great sensibility, depth, and balance to write plays that could be experienced as stories, than as preaching. This is why he had to be such a great success. It is an out and out and very typical, brilliant and highly engaging and entertaining Shakespeare comedy.

May 07, 2020

WILLIAM SHAKESPEARE


WILLIAM SHAKESPEARE

WILLIAM SHAKESPEARE – HIS LIFE AND GENIUS

William Shakespeare is regarded the world over as one of the greatest literary figures. He was an elusive figure and not much is known about his life, though his works speak for themselves in so many ways, and to a variety of people and in a variety of ways, from the erudite to the common man. 

His appeal was clearly universal, maybe, because his themes and especially his characters were universal. You will find all the strengths and weaknesses of Shakespearean characters in most men. 

He had a way with words, dialogues and presentation that was not just artistically beautiful but also dramatic and deeply entertaining and providing an unforgettable experience. He was very successful in his time. Even today, his plays are performed the world over, in multiple languages and with great success. 

He was born in 1564 and died in 1616 AD. He wrote 37 plays and 154 sonnets. He took to producing plays and that very practical need, maybe, gave his writings that edge of drama and powerful presentation. 

What was his specific genius? 

He had an x- ray vision into people, the kind of people we meet each day. In that sense, he had a deep grasp of psychological motivations especially flaws. The flaws could be made tragic or comic and he did both with great talent and genius. 

He mixed the life of these characters, with philosophy and statements about life too. But he was not primarily a philosopher but a great story teller. 

He knew HOW to tell a story, how to create emotion and sympathy in the reader and audience. 

It was not just plot twists, but the motivation of each character that he presented and also made use of, to tell a story dramatically. 

His dialogues were superb expressions of what happens inside the soul of people, even in evil characters. 

That gave a melodramatic sense of life to the play, to the characters and the fates of the characters. He had a genius to SEE And SHOW drama in the emotions and the psychology and the soul of the common human. Nothing escaped his merciless observation and he brought out the exact elements needed to give a dramatic effect, with twists and turns, expression and real emotions in each character. 

He brought out all the things that are usually muted and buried in the souls of people. 

So, the audience or reader identifies with the characters starkly, deeply and is obviously touched and that is a strange kind of mirror. 

Shakespeare gives that to any kind of reader. You can COME OUT in your mind and play your part while watching. 

As he himself stated, we are all players and we all play our parts and exit one day. 

So, he presented irony too along with emotion, an ability to satirize and even exaggerate without becoming base and cheap. 

That great artist always knew where his sympathy lay. He never crossed a line of truth, almost letting the characters speak, feel, dramatize, fail, succeed, laugh and cry. 

He was like a GOD who did not write but let the play, play itself out. He had no real judgments to make, and his plays do not really inspire, or elevate. He was, as we stated earlier, not a philosopher, showing only men as they are, not as they could or even should be. 

That was the genius of Shakespeare. Within that kind of framework, he did a superlative and matchless job. 

In the next sections, we will bring out that specific genius more concretely with a deep example, and give you the taste of how one can experience Shakespeare and how it can dramatically enhance your life by universalizing the souls of people around you. The reader finds great moments of truth on the conscious and experiential level about fates of men. In usual life, that is not seen or made conscious.