Leonardo da Vinci : The Man who knew

Almost Every one knows the famous Painting Mona Lisa, and thus Leonardo da Vinci.I was always fascinated by him & his ideas. I thought to write something on him.I regard him as the person who knew, he knew what he is doing and what is there in nature.

He was a scientist, mathematician, engineer, inventor, anatomist, painter, sculptor, architect, botanist, musician and writer. Many claim he was the smartest man to ever live, many claim he was the most talented to ever live on earth. He was a man whose curiosity was equaled only by his powers of invention and talent.

His ideas were way ahead of his time, the technology available at that time was not able to sustain his ideas.

How a Scientist Thinks?

..."Some time ago I received a call from

a colleague. He was about to give a student a zero for his answer to a
physics question, while the student claimed a perfect score. The
instructor and the student agreed to an impartial arbiter, and I was
selected. I read the examination question:

Question: show how is it possible to determine the height of a tall building with the aid of a barometer.

The student had answered, "Take
the barometer to the top of the building, attach a long rope to it,
lower it to the street, and then bring the rope up, measuring the
length of the rope. The length of the rope is the height of the
building."

The student really had a strong case
for full credit since he had really answered the question completely
and correctly! On the other hand, if full credit were given, it could
well contribute to a high grade in his physics course and to certify
competence in physics, but the answer did not confirm this.

I
suggested that the student have another try. I gave the student six
minutes to answer the question with the warning that the answer should
show some knowledge of physics. At the end of five minutes, he had not
written anything. I asked if he wished to give up, but he said he had
many answers to this problem; he was just thinking of the best one. I
excused myself for interrupting him and asked him to please go on.

In the next minute, he dashed off his answer which read: "Take
the barometer to the top of the building and lean over the edge of the
roof. Drop the barometer, timing its fall with a stopwatch. Then, using
the formula x=0.5*a*t^^2, calculate the height of the building."

At
this point, I asked my colleague if he would give up. He conceded, and
gave the student almost full credit. While leaving my colleague's
office, I recalled that the student had said that he had other answers
to the problem, so I asked him what they were.

"Well," said the student, "there
are many ways of getting the height of a tall building with the aid of
a barometer. For example, you could take the barometer out on a sunny
day and measure the height of the barometer, the length of its shadow,
and the length of the shadow of the building, and by the use of simple
proportion, determine the height of the building."

"Fine," I said, "and others?"

"Yes," said the student, "there
is a very basic measurement method you will like. In this method, you
take the barometer and begin to walk up the stairs. As you climb the
stairs, you mark off the length of the barometer along the wall. You
then count the number of marks, and this will give you the height of
the building in barometer units."

"A very direct method."

"Of course. If
you want a more sophisticated method, you can tie the barometer to the
end of a string, swing it as a pendulum, and determine the value of g at the street level and at the top of the building. From the difference between the two values of g, the height of the building, in principle, can be calculated."

"On
this same tact, you could take the barometer to the top of the
building, attach a long rope to it, lower it to just above the street,
and then swing it as a pendulum. You could then calculate the height of
the building by the period of the precession".

"Finally," he concluded, "there are many other ways of solving the problem.

Probably the best," he said, "is
to take the barometer to the basement and knock on the superintendent's
door. When the superintendent answers, you speak to him as follows:
'Mr. Superintendent, here is a fine barometer. If you will tell me the
height of the building, I will give you this barometer."

At
this point, I asked the student if he really did not know the
conventional answer to this question. He admitted that he did, but said
that he was fed up with high school and college instructors trying to
teach him how to think.

The student was Neils Bohr and the arbiter was Ernest Rutherford.

Quote of the day

"The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift."

Are we Safe?

You know, we can put a bomb in a bag these days. This big bomb—it’ll wipe out a city—fits in a bag. Go to the center of any Metro City on a weekday, stand on an intersection and just count the bags you see between 9 AM to 8 PM. See what I mean? People blew up trains, planes, cars & many more...

So do you feel safer now? If we stop plane/car/train while every bag is searched, if we put metal detectors in every public building, if we put bomb-sniffing dogs on every street, tap every phone and cram every inch of our borders with concrete walls and video cameras and razor wire, then can things go back to the way they used to be? Will our nation be “secure” then?

The way I see it, the issue is not “If so-and-so is elected another attack will occur (example BJP),” but “If another attack is going to happen, it will happen regardless of who gets Elected.” The whole mess is insane, but when was the last time you heard a politician promise to stop people from dying in car accidents? If politicians weren’t worried about what people want to hear, they’d have told us by now that we will never be completely safe. I’ll say that again.

We will never be completely safe.

The world is a dangerous place, and it’s a lot smaller & flat than it used to be. We can’t just keep the bad parts at an arm’s length anymore. Even if we blot out terrorism, there are still car accidents, heart disease, natural disasters, school shootings, chainsaw killers, child molesters, asteroids, collapsing bridges, terrorists,naxals, bodo's.

So what are you going to do? You can eat healthy, quit smoking, draw the shades, check the locks, get a gun, turn on the alarm, buy a mean dog, and travel everywhere in a bulletproof car, but someday, you’re going to be as dead as anyone else.

What are your priorities? What do you want from your life, because you can hide in your basement until the end of time worrying about the problems that you’ll never fix, or you can accept that life is dangerous and choose to live yours anyway. The world is chock-full of foul people who do terrible things, and there’s no reason we should ignore that. But if we can’t even push these things into the background every once in awhile, how are we supposed to cope?

So I say don’t spend your life worrying about all the things that can kill you, but don’t expect any of those things to go away either. If you’re scared, try to be brave and when the shit hits the fan and you can’t even do that anymore, at least try to hold steady. It’s been some years now. How about we stop letting fear run our lives & our Nation?

How to Become a Real Hacker?

• Study C/C++/assembly language
  
• Study computer architecture
  
• Study operating system
  
• Study computer network
  
• Examine the hacking tools for a month
  
• Think the problem of the computer
  

Four Fundamental Forces of Nature

Time Spending on Browser Compatibility Fixing

Me at Google Developer Day 2008 India

Couple of hours ago i attended the Google Developer Day 2008 at Chancery Pavilion , Residency Road, Bangalore.

It was a pleasue to attend the First Google Developer Day 2008 event in India.

As I know most of the other Developers that attended or Google itself can provide much more information about it, so from my side i thought to provide brief details.

Google Developer Day  started with a video about Google which was composed in fantastic way with music.If i happen to get that video i will post it here within couple of days.

Then Dr. Prasad addressed the Keynote and he talked about the Google's mission to make Cloud more accssible to the User. He showed us how Google is adressing the 

• Client - Ex. Google Chrome
  
• Cloud - Ex. Google App Engine
  
• Connectivity -- Ex. Android Platform
  

There were Tech Talk on 

• Google Desktop API
• Indic API
• OpenSocial
• Google App Engine
• Maps API
• Google Web Tool Kit

I attended Google Desktop API & Google App Engine Tech Talks.

Overall it was a great experience & Google Developers were pretty awesome

Here are the some of the links

http://code.google.com/intl/en_in/events/developerday/2008/home.html

http://maps-gdd2008.appspot.com/

http://gmaps-samples.googlecode.com/svn/trunk/slides-mymaps-gdd2008/

Apart from that every one got 2 GB Pen Drive with all the necessary softwares & SDK, 1 T- Shirt, 1 Key Ring, 1 Notepad to make Computer Geeks happy.

Happy Googling................ 

SMS messages

Never whisper words of "Love" if the feeling is not true...Never share your feeling if you mean to break a "Heart"... Never look into my eyes if all you have to do is lie... And never say "Hello" if you really mean "Goodbye....

Life is more strict than a teacher,a teacher teaches lesson & then keeps the exam, but life keeps the exam first  & then gives the lesson!

Those who make u smile thanks them. Those who would make u cry tolerate them with smile.But those who make u smile with tears in your eyes always care for them.

When you are in light everything will follow you.But when you enter darkness,even your own shadow will not follow you.

The person whom you love the most breaks your heart & leaves... even after years when you see that person, your heart misses a beat..

SMS har pal karu to shararat hogi,har din karu  to pareshani hogi,kabhi bhi nahi karu to kanjusi hogi,par dil se karu to shayad apko khushi hogi...

Living in favourable & unfavourable situation is "part of living". But smiling in all those situations is called "Art of Living".

Tare Zameen Par

Main Kabhi Batlata Nahin,
Par Andhere Se Darta Hoon Main Maa
Yun To Main,Dikhlata Nahin
Teri Parwaah Karta Hoon Main Maa
Tujhe Sab Hai Pata, Hai Na Maa
Tujhe Sab Hain Pata…Meri Maa

Bheed Mein Yun Na Chodo Mujhe
Ghar Laut Ke Bhi Aa Naa Paoon Maa
Bhej Na Itna Door Mujhko Tu
Yaad Bhi Tujhko Aa Naa Paoon Maa
Kya Itna Bura Hoon Main Maa ..
Kya Itna Bura ..Meri Maa

Jab Bhi Kabhi Papa Mujhe
Jo Zor Se Jhoola Jhulaate Hain Maa
Meri Nazar Dhoondhe Tujhe
Sochu Yahi Tu Aa Ke Thaamegi Maa

Unse Main Yeh Kehta Nahin
Par Main Seham Jaata Hoon Maa..
Chehre Pe Aane Deta Nahin
Dil Hi Dil Mein Ghabraata Hoon Maa..
Tujhe Sab Hai Pata Hai Naa Maa
Tujhe Sab Hai Pata … Meri Maa

Main Kabhi Batlata Nahin
Par Andhere Se Darta Hoon Main Maa
Yun To Main,Dikhlata Nahin
Teri Parwaah Karta Hoon na Maa
Tujhe Sab Hain Pata, Hain Na Maa
Tujhe Sab Hain Pataaa,,Meri Maa …..

Listening to : Jhonka Hava ka from Hum Dil De Chuke Sanam

Jhonka Hava Ka Aaj Bhi Zulfein Udaata Hoga Na
Tera Dupatta Aaj Bhi Tere Sar Se Sarakta Hoga Na
Baalon Mein Tere Aaj Bhi Phool Koi Sajta Hoga Na
Thandi Havaein Raaton Mein Tujhko Thapkiya Deti Hogi Na
Chaand Ki Thandak Khwaabon Mein Tujhko Leke To Jaati Hogi Na
Sooraj Ki Kirnen Subah Ko Teri Neendein Udaati Hogi Na
Mere Khayaalon Mein Sanam Khud Se Bhi Baatein Karti Hogi Na
Main Dekhta Hoon Chhup Chhupke Tumko Mehsoos Karti Hogi Na
Jhonka Hava Ka Aaj Bhi Zulfein Udaata Hoga Na

Tadev Lagnam Suridam Tadevah
Naarabalam Chandra Balan Tadevah
Vidya Balam Daiv Balan Tadevah
Lakshmi Pati Tendra Yugam Swarami
Shubmangalah Sawadha

Kaagaz Pe Meri Tasveer Jaisi Kuchh To Banati Hogi Na
Ulat Palatke Dekh Ke Usko Jee Bhar Ke Hansti Hogi Na
Hanste Hanste Aankhein Tumhari Bhar Bhar Aati Hogi Na
Mujhko Dhaka Tha Dhoop Mein Jisse Vo Aanchal Bhigoti Hogi Na
Saawan Ki Rimjhim Mera Taraana Yaad Dilati Hogi Na
Ek Ek Meri Baatein Tumko Yaad To Aati Hogi Na
Yaad To Aati Hogi Na
Yaad To Aati Hogi Na
Kya Tum Mere In Sab Sawaalon Ka Kuchh To Jawaab Dogi Na

‘You’ve got to find what you love’

"Stay Hungry, Stay Foolish"

Travel Journal : Bangalore to Kolkata

Maine Gandhi Ko Nahi Mara

Lahron Se Darr Kar Nauka Paar Nahin Hoti

Himmat Karne Walon Ki Haar Nahin Hoti

Nanhiin Chiteen Jab Daana Lekar Chalti Hai

Chadhti Deewaron Par Sau Baar Phisalti Hai

Mann Ka Vishwaas Ragon Mein Saahas Bharta Hai

Chadh Kar Girna, Girkar Chadhna Naa Aakarta Hai

Aakhir Uski Mehnat Bekaar Nahin Hoti

Koshish Karne Walon Ki Haar Nahin Hoti

Dubkiyaan Sindhu Mein GotaKhor Lagaata Hai

Jaa Jaa Kar Khaali Haath Laut Aata Hai

Milte Na Shahaj Moti Paani Mein

Behta Doona Utsaah Isi Hairaani Mein

Muthi Uski Khaali Har Baar Nahin Hoti

Himmat Karne Walon Ki Haar Nahin Hoti

Asafalta Ek Chunauti Hai Sweekaar Karo

Kya Kami Reh Gayi Dekho Aur Sudhaar Karo

Jab Tak Na safal Ho Neend Chaain Ko Tyaago Tum

Sangharshon Ka Maidaan Chhodh Mat Bhaago Tum

Kucch Kiye Bina Hi Jai Jai Kar Nahin Hoti

Himmat Karne Walon Ki Haar Nahin Hoti  

2 Articles that inspired Hackers

I was watching a documentory on History of Hacking, and i came across an article mentioned in the documentory which inspired a generation of hackers in its early days.All the hacking started with Phone Phreaks. You can read it the link is given below.

1. Secrets of the Little Blue Box
2. The Official Phreaker's Manual

Stock Market Funda

As metioned by one of my friend,here is a Story that kick start you in the world of Stock Market.

Once upon a time in a village, a man appeared and announced to the villagers that he would buy monkeys for Rs10/-.


The villagers seeing that there were many monkeys around, went out to the forest and started catching them. The man bought hundreds at Rs10/- and as supply started to diminish, the villagers stopped their effort. He further announced that he would now buy at Rs20/-. This renewed the efforts of the villagers and they started catching monkeys again. Soon the supply
diminished even further and people started going back to their farms. The offer rate increased to Rs25 and the supply of monkeys became so little that it was  an effort to even see a monkey let alone catch it. 

The man now announced that he would buy monkeys at Rs50! 

However, since he had to go to the city on some business, his assistant would now buy on behalf of him. In the absence of the man, the assistant told the villagers,"Look at all these monkeys in the big cage that the man has collected. I will sell them to you at Rs35 and when the man returns from the city, you can sell it to him for Rs50." 

The villagers squeezed up all their savings to buy the monkeys from the assistant. 

But then after a few days, they never saw the man nor his assistant, but only monkeys everywhere!!

Welcome to the world of Stock Market.