Continuing with the tactics for solving Sudoku from my earlier post, here is the second part of the post. Here we will discuss tactics referring to level 2 and 3. For legend and terminologies please refer the earlier post.
April 03, 2011
March 23, 2011
Superb Moon
All of us heard about the recent super moon phenomenon that took place on March 19 2011. Yes, I too witnessed the event late in the might and here is one of my pic.
March 17, 2011
Solving Sudoku - tactics
Sudoku, the puzzle of this decade, is quite a fun to solve.!
But if you find it boring and think it is fun only as long as one can solve it.. then do take my word..
"Sudoku is lot more fun to solve when it gets harder, but only if you have the right tactics and solving strategies."
Over the next few weeks we will discuss solving tactics of varying levels and difficulties starting from the easiest to the difficult ones. We will only discuss the tactics for 3x3 sudoku ppuzzle..But before we start on that, I have a few points to make:
But if you find it boring and think it is fun only as long as one can solve it.. then do take my word..
"Sudoku is lot more fun to solve when it gets harder, but only if you have the right tactics and solving strategies."
Over the next few weeks we will discuss solving tactics of varying levels and difficulties starting from the easiest to the difficult ones. We will only discuss the tactics for 3x3 sudoku ppuzzle..But before we start on that, I have a few points to make:
March 11, 2011
Calculate the day of any date
Do you want to know How to calculate the day of any given date off hand?
Then read on..
For any given date, there is a simple workable formula to calculate the corresponding day. Since for most of the times we would work with dates in 20th and 21st century, So let me just limit myself to explain a simple formula that would work for these 200 years!
March 07, 2011
Naming the days of the week
How are Days of the week named?
Continuing with the last post of why there are 7 days in a week, here I will try to elucidate the idea behind the naming and the order of the days in a week. This was the method used in the olden times (Babylonian civilization) to arrive at the names for the days and their order.
March 04, 2011
7 days in a week
Many civilizations and religions have the concept of 7 days making a week. Is there any astronomical significance for this (7 days in a week)? How come all civilizations chose exactly to have 7 days in a week?
I had asked the very same question to Dr.S.Balachandra Rao of the Gandhi Center at the M.P.Birla Research Foundation. (Some of you might know him as the mathematics professor & HOD and former principal of National College).
He is an exponent in the subject of calendars and has authored many books. Link to all his books (both math and astronomy) is provided here.
I had asked the very same question to Dr.S.Balachandra Rao of the Gandhi Center at the M.P.Birla Research Foundation. (Some of you might know him as the mathematics professor & HOD and former principal of National College).
He is an exponent in the subject of calendars and has authored many books. Link to all his books (both math and astronomy) is provided here.
March 01, 2011
Age of the universe
How do they calculate the age of the universe
Hubble constant (Ho) is used to estimate the age of the universe..
How Do They Do It..
This is how...
December 15, 2005
Bridging The Digital Divide
Information Rich, Information Poor - Digital divide
At the beginning of the last century, the brilliant Indian mathematician Ramanujan showed by example that great riches can come from coupling an individual's innate talent - his was a truly remarkable one - with a small tool set. In his case, it took a single volume: G.S. Carr's Synopsis of Elementary Results in Pure Mathematics. Using the book, the young Ramanujan taught himself math and by the time he was 19, he had already begun to do groundbreaking work in number theory.
Today, we can do much the same thing for children by giving them their own simple tool: a laptop. Laptop will not only be something to own and feel empowered by, it will also be portable and a tool for collaboration. Students will be able to access thousands of textbooks electronically and learn how to program, one of the best ways to "learn how to learn". And when students attach cameras, microphones, and printers, the basic laptop will become a foundation for innovation, a tool in tune with their different interests and talents.
But the present situation, more than 80% of people in the world have never even heard a dial tone, let alone surfed the Web. And the gap between the information haves and have-nots is widening. This is the digital divide. And it has become quite essential to bridge this much widening gap.
The accessibility of rural areas to the Internet is a test of the digital divide. But nowadays there are different ways to eliminate the digital divide in rural areas like Power line communication, Broadband Wireless (WiFi), proprietary and upcoming WiMAX systems, Communications satellite with two-way access to the Internet, The Simputer, a handheld computer intended for the masses of India and other developing countries developed at IISc Bangalore, and MIT Media Lab's $100 laptop, intended to be purchased by education ministries and distributed to poor children world wide.
But there exists few barriers like the cost, and the connectivity. Some technological improvements are also required. And any technology which aims to bridge this divide should be universally and cheaply accessible. The price can be brought down by large consumption (Moore’s Law) but the consumption volume increases only when we have a low price.
Does it seem like a Paradox to you? May not be, but it needs constant focus and concerned efforts towards developing technical and technological Solutions for “Bridging The Digital Divide”.
At the beginning of the last century, the brilliant Indian mathematician Ramanujan showed by example that great riches can come from coupling an individual's innate talent - his was a truly remarkable one - with a small tool set. In his case, it took a single volume: G.S. Carr's Synopsis of Elementary Results in Pure Mathematics. Using the book, the young Ramanujan taught himself math and by the time he was 19, he had already begun to do groundbreaking work in number theory.
Today, we can do much the same thing for children by giving them their own simple tool: a laptop. Laptop will not only be something to own and feel empowered by, it will also be portable and a tool for collaboration. Students will be able to access thousands of textbooks electronically and learn how to program, one of the best ways to "learn how to learn". And when students attach cameras, microphones, and printers, the basic laptop will become a foundation for innovation, a tool in tune with their different interests and talents.
But the present situation, more than 80% of people in the world have never even heard a dial tone, let alone surfed the Web. And the gap between the information haves and have-nots is widening. This is the digital divide. And it has become quite essential to bridge this much widening gap.
The accessibility of rural areas to the Internet is a test of the digital divide. But nowadays there are different ways to eliminate the digital divide in rural areas like Power line communication, Broadband Wireless (WiFi), proprietary and upcoming WiMAX systems, Communications satellite with two-way access to the Internet, The Simputer, a handheld computer intended for the masses of India and other developing countries developed at IISc Bangalore, and MIT Media Lab's $100 laptop, intended to be purchased by education ministries and distributed to poor children world wide.
But there exists few barriers like the cost, and the connectivity. Some technological improvements are also required. And any technology which aims to bridge this divide should be universally and cheaply accessible. The price can be brought down by large consumption (Moore’s Law) but the consumption volume increases only when we have a low price.
Does it seem like a Paradox to you? May not be, but it needs constant focus and concerned efforts towards developing technical and technological Solutions for “Bridging The Digital Divide”.
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