Physics beckons

Home » General

Category Archives: General

Advertisements

Revamping IIT-JEE

Revamping IIT-JEE: Important Changes in the Offing

Some of the major recommended changes in IIT-JEE entrance examination structure

  • JEE 2016 will be conducted in the same manner as 2015
  • Enhanced intake from 1.5 lakh to two lakh into the JEE (Advanced) stage
  • Setting up of a National Testing Service by early 2016

Read on……..

Revamping JEE-IIT

Advertisements

Sept. 28; Another important day in history of space exploration by India

ASTROSAT (Astronomical Observation Satellite) & six other foreign satellites to be launched by ISRO.

Click below for further reading

http://www.pc-tablet.co.in/2015/09/21/14831/astrosat-isro-launch-astronomical-observation-satellite-pslv-c30-sept-28/

Think it over

“Ideally, what should be said to every child, repeatedly, throughout his or her school life is something like this: ‘You are in the process of being indoctrinated. We have not yet evolved a system of education that is not a system of indoctrination. We are sorry, but it is the best we can do. What you are being taught here is an amalgam of current prejudice and the choices of this particular culture. The slightest look at history will show how impermanent these must be. You are being taught by people who have been able to accommodate themselves to a regime of thought laid down by their predecessors. It is a self-perpetuating system. Those of you who are more robust and individual than others will be encouraged to leave and find ways of educating yourself — educating your own judgements. Those that stay must remember, always, and all the time, that they are being moulded and patterned to fit into the narrow and particular needs of this particular society.”
― Doris Lessing: A British novelist.

How can one learn Physics/Science?

Over the last couple of days, quite a few students have sought tips to grasp the concepts in Physics. I am reproducing an earlier blog for their benefit……….
Read on…..
Although a lot can be said and discussed about the same, a very simple and straight forward answer comes to my mind.
By critical thinking alone!
The following excerpts from Feynman’s lecture in Physics say it all.
“A poet once said, ‘The whole universe is in a glass of wine.’
It is very true.
Look at a glass of wine closely enough to see the entire universe.
 
 It contains:
  • the twisting liquid which evaporates depending on the wind and weather, the reflection in the glass; and our imagination adds atoms.
  • a distillation of the earth’s rocks, and in its composition we see the secrets of the universe’s age, and the evolution of stars.
  • a  strange array of chemicals in the wine? How did they come to be?
  • the ferments, the enzymes, the substrates, and the products.There in wine is found the great generalization; all life is fermentation.
Divide this glass of wine, this universe, into parts — physics, biology, geology, astronomy, psychology, and so on to all other branches of knowledge.
Remember:  Nature does not know it!
Each one of has to think and learn on his own. After all  Science has its origin and existence only in our ability to think and analyze.
Not interested?
Enjoy: drink wine; throw the glass  and forget it all”.
THE MESSAGE IS LOUD AND CLEAR.

 No thinking! No Science!

OR

Listen to the message in this melodious style!

Happy learning!

Closer to the impossible……….

Molecules cooled almost to zero kelvin..

Some scientists at MIT got a lot closer to the impossible goal by cooling a molecule to 500 nano kelvins….

Interested to know the details..?

Read on…

http://gizmodo.com/physicists-just-cooled-molecules-to-a-hair-above-absolu-1711666066

A HEART TOUCHING STORY

Ex Indian President Dr. Abdul Kalam Says:

“When I was a kid, my Mom cooked food for us.
One night in particular when she had made dinner after a long hard day’s work, Mom placed a plate of ‘subzi’ and extremely burnt roti in front of my Dad.

I was waiting to see if anyone noticed the burnt roti. But Dad just ate his roti and asked me how was my day at school.

I don’t remember what I told him that night, but I do remember I heard Mom apologizing to Dad for the burnt roti.

And I’ll never forget what he said: “Honey, I love burnt roti.”

Later that night, I went to kiss Daddy, good night & I asked him if he really liked his roti burnt. He wrapped me in his arms & said:
“Your momma put in a long hard day at work today and she was really tired. And besides… A burnt roti never hurts anyone but HARSH WORDS DO!”
“You know beta – life is full of imperfect things… & imperfect people…”

I’M NOT THE BEST & AM HARDLY GOOD AT ANYTHING!
I forget birthdays & anniversaries just like everyone else.
What I’ve learnt over the years is: To Accept Each Others Faults & Choose To Celebrate Relationships”

Life Is Too Short To Wake Up With Regrets..

Love the people who treat you right & have compassion for the ones who don’t.

The Wisdom…….

“Remember to look up at the stars and not down at your feet. Try to make sense of what you see and wonder about what makes the universe exist. Be curious. And however difficult life may seem, there is always something you can do and succeed at.
What matters is that you just don’t give up.”…………………

                                                                                Stephen Hawkins

A dream is an invisible seed…..

Have a dream to realise…..

Remember:

“A dream is an invisible seed,

Plant it in Hard Work,

Water it with sweat,

Nourish with determination & watch it grow to a reality.”

Set your priorities right………. A Short Story………

Physics beckons

Dear Students
Here is a story I would like to share with you as you use the internet for this blog. I read it over 30 years ago and feel this is the most appropriate time to share it with you.
‘Virtue’ (good habits) and ‘Vice’ (bad habits) were identical twin sisters. In early childhood, they could be differentiated by different clothes they wore. Once the twins went to take a bath in a river. They left their clothes on the riverside. Vice came out first. True to her name, she thought of a mischief and wore her sister’s clothes and left. When Virtue came out, she has no choice but to wear the clothes left by Vice. The two have never met since and appear to have deceptive looks.
 
What appears to be Virtue or Vice may actually not be so.
It is important for each one of…

View original post 46 more words

CONGRATS…..ISRO takes a big leap towards manned space mission……

The launch may be viewed using the link below:

https://www.youtube.com/watch?v=pD0RtxuGxug

The report carried in The Hindu about the launch…..

ISRO successfully tests the atmospheric re-entry of a crew module

Dot 9.30 am, India’s first experimental flight GSLV Mark III took off successfully from the second launch pad at Satish Dhawan Space Centre, in Sriharikota on Thursday. Also known as LVM3/CARE, this suborbital experimental mission was intended to test the vehicle performance during the critical atmospheric phase of its flight and this carried passive (non functional) cryogenic upper stage.

“Everything went off as expected. This new launch vehicle performed very well and is a great success. We had an unmanned crew module to understand re-entry characteristics. That also went off successfully and it has touched down in the Bay of Bengal,” said ISRO’s chief K. Radhakrishnan.

In exactly about five and half minutes after taking off, the vehicle carried its payload — the 3775 kg crew module Atmospheric Re-entry experiment (CARE) — to the intended height of 126 km.

Two massive S-200 solid strap-on boosters, each carrying 207 tonnes of solid propellants, ignited at the vehicle lift off and after functioning normally, separated 153.5 seconds later. L110 liquid stage ignited 120 seconds after lift off, while S200s were still functioning for the next 204.6 seconds.

CARE separated from the passive C25 cryogenic upper stage of GSLV Mark III 330.8 seconds after lift off and began its guided descent for atmospheric re-entry. The CARE module landed over Andaman Sea about 1,600 km from Sriharikota, this was the finishing line.

Following this the CARE separated from the upper stage of GSLV Mark III and re-entered the atmosphere and safely landed over Bay of Bengal with the help of its parachutes about 20 minutes 43 second after lift off.

“As it made it’s way back into our atmosphere the parachutes that brought it down really worked well and we are pleased with the performance. This is a step towards manned space flight as the module that has been designed to carry astronauts has touched down safely. The coast guard ships that were 100 km away from the touchdown point lost sight of it briefly, but the module continued to communicate it’s location to us,” said Unnikrishnan Nair, the man behind the Manned Space Flight mission.

With today’s successful launch, the vehicle has moved a step closer to its first development flight with the functional C25 cryogenic stage. “The payload capabilities that we can now handle have been significantly enhanced. After the success of the dummy stage cry engine tested in this rocket, we will have greater confidence to put the cryogenic engine in it within 2 years,” said S. Somanath, Mission Director of LVM-3.