Happy New Year 2021
Thursday, February 05, 2009
Eyecatchers-133: "The Obamobile"
S&T Watch-49: "Holes in Earth's Magnetic Field"
But it has now been discovered that occasionally holes appear in Earth's magnetic shield. Recent observations made by THEMIS (Time History of Events and Macroscale Interactions during Substorms), a fleet of five small NASA satellites, have revealed the largest hole yet seen in the magnetic field that protects Earth from most of the Sun's violent blasts. Observations from THEMIS show the Earth's magnetic field occasionally develops two holes, allowing solar wind to penetrate the Earth's upper atmosphere. The holes are defying many of scientists' previous ideas on how the interaction between Earth's magnetosphere and solar wind occurs: From the location of the holes the whole interaction appears to work in a manner that is completely the opposite of what scientists had thought.
It has been known that the sun's magnetic field shifts its orientation frequently, sometimes becoming anti-aligned. It was earlier believed that more solar particles entered Earth's magnetosphere when the Sun's field was oriented opposite to the Earth's, but the opposite turned out to be the case here. Data from THEMIS showed that twenty times more solar wind passed into the Earth's protective shield when the magnetic fields were aligned.
Using computer simulation, scientists have been able to find out how the holes develop. They have discovered that two holes frequently develop in Earth's magnetic field, one at high latitude over the Northern hemisphere, and one at high latitude over the Southern hemisphere. The holes form over the day-lit side of Earth, on the side of the magnetic shield facing the Sun.
This discovery not only has implications for scientists' understanding of the interaction between the Sun and Earth's magnetosphere, but for predicting the effects to Earth during the next peak in the solar cycle.
Courtesy: "Recent Developments in Science and Technology" by Biman Basu (Email: bimanbasu@gmail.com), Dream 2047, February 2009, Vol.11, No.5.
Grateful thanks to Dr Biman Basu and Dream 2047.
Wednesday, February 04, 2009
Health News-33: "World Cancer Day"
The campaign advocates the following for prevention of cancer:
Providing a smoke-free environment for children;
Being physically active;
Eating a balanced, healthy diet;
Avoiding obesity; and
Avoiding over-exposure to the sun
For detailed article on "World Cancer Day": http://en.wikipedia.org/wiki/World_Cancer_Day
Grateful thanks to Wikipedia, the free encyclopedia.
Tuesday, February 03, 2009
Newsletters of Interest-1: "Science in the News Weekly" from American Scientist
For example, the 5th issue of January 2009 (January 26-30)contains links to interesting articles (I am giving only short titles of these articles):
1. 10 sci-fi gadgets on the horizon
2. Whether doctors are downplaying side-effects of cholesterol drugs
3. The Six greatest mysteries of our solar system
4. Climate change
5. Mars rover, 'Spirit'
6. A distant Jupiter-like planet
7. Disappearance of woolly mammoths
8. Reprocessing of Spent Nuclear Fuel
9. Transition from Analog to Digital Television
10. Digital Preservation and Authentication of War Crimes/Atrocities
11. Flexible Computer Display Screen
12. Sensors for monitoring soil moisture and temperature
13. Food Safety
14. Influence of Heredity
15. What we have learned since Darwin published his famous book 150 years ago
Sigma Xi also has other interesting e-newsletters:
1. American Scientist Update (gives an early peek at each new issue with hyperlinked capsule descriptions of feature articles, columns and book reviews).
2. Science in the News Daily (Provides a concise daily roundup of stories from the mainstream media, with links to the original articles; latest developments in the fast-paced world of science and technology)
3. Scientists' Bookshelf Monthly (offers book news, discussion and reviews from American Scientist Online, including previews of new book reviews when they are first posted, links to exclusive author interviews, highlights of forthcoming science books and book chat from the editors).
If you are interested, just click to go to their site and subscribe to the newsletter of your choice:
http://www.americanscientist.org/subscribe/page/free-e-newsletters
Friday, January 30, 2009
Letters-67: "Sri Lankan Issue"
2. LTTE leader V.Prabhakaran's uncompromising attitude forced the Sri Lankan government to press for a military solution to the ethnic issue. This has caused immense damage to the minorities' cause in Sri Lanka. The leaders of Tamil Nadu, particularly, Chief Minister M.Karunanidhi, should respond positively to Mr.Rajapaksa's call to persuade the LTTE leaders to spare the lives of civilians being used as a shield against the army. It is also an opportunity for Mr.Rajapaksa to show his statesmanship by being generous in victory. - Comdt.G.V.Mathew(retd), Thiruvananthapuram.
3. Colombo should not negotiate with the LTTE at this stage. It should insist on the Tigers' surrender and the release of civilians. It should try the LTTE cadres for the atrocities they have committed. At the same time, the government can engage in a dialogue with the Tamil groups. It can involve Mr.Karunanidhi and Ms.Jayalalitha too in the process. - M.D.Ravikanth, Chennai.
Courtesy: The Hindu, Madurai, January 29, 2009 ("Letters to the Editor")
Grateful thanks to M/s.Nemani Girija, G.V.Mathew, M.D.Ravikanth and The Hindu.
Eyecatchers-143: "President Obama criticizes Financial Corporations"
Grateful thanks to the official Whitehouse blog, www.whitehouse.gov/blog.
Wednesday, January 28, 2009
Eyecatchers-142: "President Obama's First Steps"
Courtesy: Theodore Ross, HARPER'S WEEKLY, January 27, 2009
Grateful thanks to Mr.Theodore Ross and Harper's Weekly.
Tuesday, January 27, 2009
Letters-66: "Well done, Obama!"
2. Mr.Obama's action to halt the infamous Guantanamo trials is welcome. It will help to restore the credibility of the U.S. in the eyes of the world. If he can also set a target for pulling the American troops out of Iraq, as he promised during his election campaign, the road to peace and stability in the Middle East will become visible. - Rajaram Santhanam, Mumbai.
3. Mr.Obama's order to prosecutors at the military tribunals in Guantanamo Bay to suspend the trial shows his respect for humanity. With the change in the U.S. leadership, the world is optimistic of a global change for the better. - A.Samshath, Chennai.
4. It was heartening to see Mr.Obama beginning to deliver on his campaign promises within hours of assuming office as President. The suspension of the trial proceedings against the Guantanamo detainees for 120 days is a positive step. Mr.Obama has initiated action to remove one of the ugliest legacies of the Bush era. Hopefully, the illegal detention centre will be shut down soon. - Shahabuddin Nadeem, Bangalore.
5. Mr.Obama's order to suspend trials at the Guantanamo Bay shows that he means business. His initiative to resolve the Middle East issue, too, deserve praise. - Y.S.Kadakshamani, Madurai.
Courtesy: The Hindu, Madurai, January 26, 2009.
Grateful thanks to Capt.T.Raju (retd), M/s.Rajaram Santhanam, A.Samshath, Shahabuddin Nadeem, Y.S.Kadakshamani and The Hindu.
Friday, January 23, 2009
S&T Watch-51: "Discovery of Magnetosphere"
Courtesy: Christopher R.Beha, Harper's Weekly, January 13, 2009.
http://en.wikipedia.org/wiki/Magnetosphere
Grateful thanks to Christopher R.Beha and Harper's Weekly.
Self-Improvement-44: "Right Beginnings"
See how in the material world everything proceeds from small beginnings. The mightiest river is at first a rivulet over which the grasshopper could leap; the great flood commences with a few drops of rain; the sturdy oak, which has endured the storms of a thousand winters, was once an acorn; and the smouldering match, carelessly dropped, may be the means of devastating a whole town by fire.
Consider, also, how in the spiritual world the greatest things proceed from smallest beginnings. A light fancy may be the inception of a wonderful invention or an immortal work of art; a spoken sentence may turn the tide of history; a pure thought entertained may lead to the exercise of a world-wide regenerative power; and a momentary animal may lead to the darkest crime.
You can, by careful thought, avoid wrong beginnings and make right beginnings, and so escape evil results and enjoy good results.
Direct your energies and attention to those beginnings over which you have complete control and authority, and which bring about the complicated web of results which compose your life. These beginnings are to be found in the realm of your own thoughts and actions.
How do you begin each day? At what hour do you rise? How do you commence your duties? In what frame of mind do you enter upon the sacred life of a new day? What answer can you give your heart to these important questions? You will find that much happiness or unhappiness follows upon the right or wrong beginning of the day, and that, when every day is wisely begun, happy and harmonious sequences will mark its course, and life in its totality will not fall far short of the ideal blessedness.
It is a right and strong beginning to the day to rise at an early hour. Begin the day strongly by shaking off indolence. How are you to develop strength of will and mind and body if you begin every day by yielding to weakness? Self-indulgence is always followed by unhappiness. Men and women are totally unaware of the great losses which they entail by this common indulgence: loss of strength of mind and body, loss of prosperity, loss of knowledge, and loss of happiness.
Begin the day, then, by rising early. If you have no object in doing so, never mind; get up, and go out for a gentle walk among the beauties of nature, and you will experience a buoyancy, a freshness, and a delight, not to say a peace of mind, which will amply reward you for your effort. One good effort is followed by another; and when a man begins the day by rising early, even though with no other purpose in view, he will find that the silent early hour is conducive to clearness of mind and calmness of thought, and that his early morning walk is enabling him to become a consecutive thinker, and so to see life and its problems, as well as himself and his affairs, in a clearer light; and so in time he will rise early with the express purpose of preparing and harmonising his mind to meet any and every difficulty with wisdom and calm strength.
There is, indeed, a spiritual influence in the early morning hour, a divine silence and an inexpressible repose, and he who, purposeful and strong, throws off the mantle of ease and climbs the hills to greet the morning sun will thereby climb no inconsiderable distance up the hills of blessedness and truth.
Excerpts from the the first chapter, "Right Beginnings" of "BYWAYS TO BLESSEDNESS" by James Allen.
Eyecatchers-141: "Quote from Inaugural Speech"
- Excerpt from the Inaugural Speech of Barack Obama, 44th President of the United States of America
Courtesy: The New Indian Express, Tiruchy, January 22, 2009.
Detailed Wikipedia articles on "BARACK OBAMA" and "BARACK OBAMA - THE BLACK KENNEDY (The bestselling biography of Barack Obama): http://en.wikipedia.org/wiki/Obama http://en.wikipedia.org/wiki/Barack_Obama_-_Der_schwarze_Kennedy
Inaugural Address of Barack Obama from WashingtonPost.com: http://media.washingtonpost.com/wp-srv/politics/documents/Obama_Inaugural_Address_012009.html
Grateful thanks to The New Indian Express, Washington Post and Wikipedia, the free encyclopedia.
S&T Watch-50: "Invisibility Shield"
Courtesy: The Hindu, Madurai, January 23, 2009 ("Snapshots - Science & Technology page).
Detailed Wikipedia article on "METAMATERIALS":
http://en.wikipedia.org/wiki/Metamaterials
Grateful thanks to The Hindu and Wikipedia, the free encyclopedia.
Health News-17: "Railways gesture to Cancer Patients"
Courtesy: The Hindu, Madurai, January 22, 2009.
Grateful thanks to PTI and The Hindu.
Letters-65: "Satyam Scam"
2. The Satyam episode has tarnished the image of not only one company but also the entire corporate sector. How far a shareholder can trust a company's 'audited' statement of accounts is now a moot question. Normally, a company's health should determine the market price of its shares. But over the years we find that the market price has nothing to do with the functioning of a company. The stock market seems to have become a gambler's den where gullible investors are taken for a ride. - S.S.Rajagopalan.
3. The vested interests have created the image that the stock market is a provider of enormous returns. All vital players - promoters, shareholders and investors - are in the market with unflinching greed for more and more profits. All kinds of manipulations, therefore, take place to ensure that all these players get more returns on their investment. - N.Sekar, Salem.
Courtesy: The Hindu, Madurai, January 23, 2009 ("Letters to the Editor")
Grateful thanks to M/s.Berry J.Vethakkan, S.S.Rajagopalan, N.Sekar and The Hindu.
Wednesday, January 21, 2009
Health News-32: New Medicine for Growing Eyelashes"
Environment-15: "Google Search and Boiling Kettle"
Health Warning-7: "Vicks VapoRub and Children"
Letters-64: "Ban Jallikattu"
2. The so-called sport called jallikattu involves neither bravery nor sporting skills. The argument that it forms part of the Tamil tradition does not hold water as we have discarded many other traditional practices in the name of rationalism. In any case, none of our matrimonial advertisements these days seeks bridegrooms with skills to tame bulls. - Rettavayal S.Krishnaswamy, Chennai.
Courtesy: The Hindu, Madurai, January 20, 2009 ("Letters to the Editor").
Grateful thanks to M/s.K.Venkataraman, Rettavayal S.Krishnaswamy and The Hindu.
Tuesday, January 20, 2009
S&T Watch-49: "Light Squeezed to Quantum Limit"
My Photo Album-34: "The Pongal Greetings I received"


