எழுத்தாளர் கல்கி அவர்களின் சில படைப்புகள் இணையத்தில் ........

http://www.geocities.com/ponniyinselvan_kalki/index.html

தமிழில் வரலாற்று நாவல்களின் ரசிகர்களில் நானும் உண்டு ..... கல்கி அவர்களின் படைப்புகளை இணையத்தில் கண்டேன் .... மேற்கண்ட முகவரியிலும் படித்து மகிழலாம்....[நூலகம் செல்ல நேரம் இல்லாத பிசியான வர்களுக்கு :):) ]

Bionic eye.........

How does a "bionic eye" allow blind people to see?

In the past 20 years, biotechnology has become the fastest-growing area of scientific research, with new devices going into clinical trials at a breakneck pace. A bionic arm allows amputees to control movements of the prosthesis with their thoughts. A training system called BrainPort is letting people with visual and balance disorders bypass their damaged sensory organs and instead send information to their brain through the tongue. Now, a company called Second Sight has received FDA approval to begin U.S. trials of a retinal implant system that gives blind people a limited degree of vision.

This is what the world looks like to

someone with macular degeneration.

The Argus II Retinal Prosthesis System can provide sight -- the detection of light -- to people who have gone blind from degenerative eye diseases like macular degeneration and retinitis pigmentosa. Ten percent of people over the age of 55 suffer from various stages of macular degeneration. Retinitis pigmentosa is an inherited disease that affects about 1.5 million people around the globe. Both diseases damage the eyes' photoreceptors, the cells at the back of the retina that perceive light patterns and pass them on to the brain in the form of nerve impulses, where the impulse patterns are then interpreted as images. The Argus II system takes the place of these photoreceptors.
The second incarnation of Second Sight's retinal prosthesis consists of five main parts:

A digital camera that's built into a pair of glasses. It captures images in real time and sends images to a microchip.

A video-processing microchip that's built into a handheld unit. It processes images into electrical pulses representing patterns of light and dark and sends the pulses to a radio transmitter in the glasses.

A radio transmitter that wirelessly transmits pulses to a receiver implanted above the ear or under the eye

A radio receiver that sends pulses to the retinal implant by a hair-thin implanted wire

A retinal implant with an array of 60 electrodes on a chip measuring 1 mm by 1 mm

source: from google..

Unresolved Mysteries....

We come across issues lik this in our daily life.Some times, we believe things with our eyes closed. And most of the times,we don think in the same way as others do and really need not to be.We have our own ways and own policies that we believe in.,and which leads to arguments and some times misunderstandings too.We strongly set in our way that we say about some things as "ridiculous,superstitious etc.."And rarely are things which we don know to accept or oppose.One of such mysteries,i came to know recently(many of u wud ve known this before) starts lik this "Does the human soul weigh 21 grams?!!"

To know about this,i started googling.They say, theories were written and scientific tests have been conducted about this topic in the past.They believed for thousands of years that the human soul has physical presence.Is it so?!! Dr. Duncan MacDougall of Haverhill in Massachusetts experimented about this and he got positive results..He conducted his tests in 6 patients.One of his patients,after the moment of his death,lost weight by nearly 21 grams.He concluded as the weight of a human body differs by 21 grams before and after death.

But several issues have been there after this experiment like
"six samples is not enough for this test,
one of the six samples only gave the good results,and
how precise was the test about the moment of death?(even now with sophisticated technology,its difficult to predict)"

So,the discussion goes like this and ends as we surely leave something behind us ,the impact what others ve had on us.....

And if anyone knows more about this topic,u leave your valuable info....

Additionally,there s a movie called "21 grams" by Alejandro ...

Go to http://www.abc.net.au/science/articles/2004/05/13/1105956.htm?site=science/greatmomentsinscience for a detailed study....

Referred : wikipedia...