Saturday, November 27, 2010

Navigation in Outer Space-Now u cannot lose ur way-part 2

Here is an article from the Science News magazine on navigation by means of pulsars published earlier this week. Go through it to see the unseen!! Cheers!!

http://www.sciencenews.org/view/generic/id/66442/title/How_to_use_a_pulsar_to_find_Starbucks

Tuesday, November 16, 2010

Leo Tolstoy in his work "What is Art?"

"I know that most men-not only those considered clever, but even those who really are clever and capable of understanding the most difficult scientific, mathematical or philosophical problems, can seldom discern even the simplest and most obvious truth if it be such as obliges them to admit the falsity of conclusions they have formed, perhaps with great difficulty-conclusions of which they are proud, which they have taught to others, and on which they have built their lives."

Saturday, November 6, 2010

Navigation in Outer Space-Now u cannot lose ur way

If you are unsure of your location on this planet, one of the many things that occur to your mind is a GPS system which can help you spot your location on globe. Thanks to United States govt for the idea and implementation. All we need is a GPS receiver and an unobstructed Line Of Sight to four of 31 GPS satellites in operation and there you go!

One of the most interesting questions is how to keep track of oneself if one were traveling in extra terrestrial space? Certainly it is far from possibility to launch GPS satellites that cover the universe.

Pulsars are rapidly rotating neutron stars that emit a beam of radio waves. The rotation rate is amazingly coherent to striking precisions. It is no longer a mere possibility but a transparent truth that such radio beams can be used for navigational purposes. And what more? They penetrate boundlessly in this very universe which enables one to navigate with precision in free space.

Thus radio waves from pulsars enables us to navigate in free space with no difficulty. Now u cannot lose ur way!!

I hope you have seen the unseen.