Wednesday, July 22, 2009

TREMENDOUS GRAVITY OF BLACK HOLE

Black holes are bodies which can suck in anything due to its gravity.Every body on this earth has gravitational force.but, the extent of the force matters a lot.The gravity of any entity is attributed to its mass and how far it is from the other.Let's now do this expt.
Take a sheet of paper in your hand.keep your other hand at some distance ,with your palm facing the paper. Do u thnk your hand has got attracted to the paper.If you say no, its wrong.Though you could see your hand at the same distance, there is a tiny gravitational force acting between the body and the paper.But, here the distance moved is very less, that it is not visible to our naked eyes.
Now crush the paper .you could find that space occupied by the paper has reduced.its mass is same. neverthless, there is a gravitational force.but it is larger than before.now that the paper has shrunk in size and has so many cavities,faults etc .This has provided the path for any body in affinity to move even more closer. (ie.into the core of the paper)
This is the same concept happening even in black hole.The star is bigger in size.There is less room for any body to move in when it shrunks in size(with same mass)any object can intrude into its core.

Wednesday, July 15, 2009

GLIMPSES OF ARCHAEOLOGY




Through this page , I would like to take my enlightened readers to an oldest archaeological site located near mamallapuram The history of this site dates back to 3b.c.

BENEATH THE SOIL:

Ever since my childhood , i have the habit of gazing at the sky and pondering about the mystery of universe. But, then that i realised,"we have infinite treasures underneath".
After waving hands to our friends in the college campus ,we began our errand to 'SIRUTHAVUR'. Initially it was all silence.But then ,the bus started resonating with the songs ,cheering voices etc.As we crossed the IT corrider of OMR, we were able to see so many premier outstanding companies like orchid chemicals,accensor,vistas etc.


Around 12 noon, to everyone's surprise, suddenly,we could see the darkening of clouds.Much as we expected,we could see it drizzling outside. The bus halted at TIRUPORUR.It was a rugged terrain.We were fortunate enough to be accompanied by our geology madam and an archaeologist.We went on to visit the age old burial grounds which spoke in volumes about the life after death. It was their tradition to bury the body of a dead person along with urns containing maize,rice etc.Many precious rings,iron materials were found by excavation from these sites, which are now being preserved by ARCHAEOLOGICAL SURVEY OF INDIA.We could notice that all these burial spots were oriented towards a water body.As we were marching to our bus, we accidentally saw a green snake which caught everyone's attention.

Our second place of visit was Siruthavur.At present ,so many studies are being carried out on civilization of people in the past.These places are glaring examples for the architecture of people in 3B.C.These places are now being mapped for further interpretation and research. After the lunch , it was a mind-boggling experience.We were enthralled by the beauty of the temple built 1500 years back.(excavated in 2004).This was actually indundated by the tsunami which took place in the past.The results of interpretation are as follows:
  • The place had a structure much resembling the peedam of a temple.
  • There was a stick similar to the vel in lord muruga's hand.
  • It had so many so many structures appearing identical to wells.
  • The place was approximately 30mtrs from the sea.
  • The slope of the place was 2 degree.
CALCULATION OF VELOCITY OF WAVES:l
The inundated temple was roughly 30m from the sea.From the generic principles of wave theory, the tsunami waves follow a sinosoidal pattern with very large time period due to WAVE SHOALING.The amplitude of the wave is also very high.
So, by the simple relation between velocity and depth
C=(gd)^0.5
g=acceleration ude to gravity,
d=depth of the sea(in this case it is around 100m) so C=31.308m/s
By the theory of projectile motion,we could find the maximum height reached .

h=50.0097meters
(This is just a rough estimate as i have not taken into account the effects of air friction and earth's rotation in projectile motion)neverthless, once i get the correct relation and formula for thes two parameters , i will update it.

These facts drive home the fact that unless there had been a major disaster like tsunami/flood ,it would have been impossible for the water level in the sea to rise so high to inundate the whole region which was (approx) 30 meters(horizontal distance) from it.It was an interesting fact that the temple was located above a huge hill.This supplements our prediction about the disaster.

Back to the campus:
Our trip came to a jolting halt. Though the trip was only for one day, these memories will linger in my mind forever.
EXTRAPOLATION OF IDEAS:
Interpolations like finding out the climate change in that area ,water table depth etc.Have u ever thought of this??? TSUNAMI DUE TO THE FALL OF ASTEROID IN THE SEA
Lets continue our innovations!!!

Monday, July 13, 2009

SHRINKING AMAZON!!!


Global warming has become an unprecedented question to the world.its high time for the world to realise that the declarations made on global warming isn't a garden party. a credible action is the need of the hour.recently scientists around the world found yet another proof for increase in earth's temperature.

The records of rainfall in the emblematic south american jungle-amazon rain forest, for the years after 2005(as we know its the hottest year in the history till date)speak themselves about the deprivation in the amount of rainfall.In addition to this ,the leaves show signs of dark stripes , which even prove the higher intake of carbon- di- oxide.This stands as a testimony to the fact that CO2 emission in that area is increasing day by day.

Even under the most optimistic climate scenaris, the destruction of the large parts of the forest is irreversible.Due to the decrease in rainfall, the roots become dry,the parched forest will be converted into a dry land and more susceptable to forest fire which will destroy the still healthy parts of the forest.

Sunday, July 12, 2009

ABOUT ME

Hi,
I am Aishwarya. At present iam doing my B.E-Geoinformatics in Anna University.My branch is considered to be one of the oldest branches of civil ensineering. Within the vast expanse of engineering, i have always been drawn towards the theories of nature and the science behind it.I believe that a scientist's legacy is not judged by the sophisticated technology he uses but the consequence of his work.This multifaceted arena of Earth science engineering has convinced me that by learning about it more, i can gain a vast insight into this magnificient world of engineering. For long i had been yearning to share my ideas in these topics. I created this blog with an intention to share my ideas on the multispectrum of Remote sensing and Astronomy. Through this blog ,I would like to write some credible articles on global warming,climate change ,astrophysics,I also plan to post my queries on these topics.I thank every soul who share his/her views in my blog for days to come.

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