The world moves with GPS. But how does GPS work? Let’s find out. GPS—global positioning system—is a space-age version of triangulation. Originally developed for military use, GPS has three components: satellites orbiting earth, master control stations around the world, and receivers installed in locations ranging from naval destroyers to private golf carts. In the U.S. GPS system, two dozen Navstar satellites orbit the planet every 12 hours, following six different orbits. Three additional satellites orbit as backup. The satellites contain atomic clocks that send precise times with each signal. The control stations monitor the satellites, using remote controlled on-board thrusters to manage their positions. When a GPS user on land or sea calls for location information, signals pass from orbiting satellites to user’s receiver. The length of time taken by the transmissions—usually a fraction of a second—helps determine distance to a point on an imaginary sphere, and the user’s latitude and longitude can be calculated by using the mathematics and triangulation. Three satellites would suffice, but more provide redundancy and compensate for inaccuracies. GPS signals are broadcast on two different frequencies, one for military use and one for civilian use. Civilian augmentation can provide precise location to within 0.4 of an inch.
WHY ARE THERE 360 DEGREES IN A CIRCLE?
A degree is a fraction of a circle, and there are 360 degrees in each of the imaginary circles that describe the surface of the Earth. The number 360, in this context, usually is, attributed to the Babylonians, (present day Iraq) who devised a base—60 number system. (Our modern system is 10). They probably were the first to divide a circle into 360 degrees (6 x 60). Some historians think that the base—60 system derives from the approximate length in days of a calendar year, but others claim that the Babylonians chose 60 because it is divisible by so many numbers. Hipparchus, the Greek astronomer, who invented the formal system of latitude and longitude, divided each Earth circle into 360 degrees, each degree, having 60 minutes. and each minute, having 60 seconds.
India Inc. is a common term used by the Indian media to refer to the formal sector (comprising government and corporate) sector of the nation. It employed 7 percent of the workforce in 2000 and contributed 60 per cent of the nominal GDP of the nation.
Famous English novelist George Orwell who wrote the famous novel ‘Animal Farm’ was born in Motihari, Bihar.
J&K became part of India 10 weeks after Independence when Maharaja Hari Singh, alarmed by the rapid advance of armed Pakistani tribesman, hurriedly signed the instrument of accession. In legal—if not moral—terms, the decision was his alone.
By Kamlesh Tripathi
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Shravan Charity Mission is an NGO that works for poor children suffering from life threatening diseases especially cancer. Our posts are meant for our readers that includes both children and adults and it has a huge variety in terms of content. We also accept donations for our mission. Should you wish to donate for the cause. The bank details are given below:
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GLOOM BEHIND THE SMILE
(The book is about a young cancer patient. Now archived in 7 prestigious libraries of the US, including, Harvard University and Library of Congress. It can also be accessed in MIT through Worldcat.org. Besides, it is also available for reading in Libraries and archives of Canada and Cancer Aid and Research Foundation Mumbai)
ONE TO TANGO … RIA’S ODYSSEY
(Is a book on ‘singlehood’ about a Delhi girl now archived in Connemara Library, Chennai and Delhi Public Library, GOI, Ministry of Culture, Delhi)
AADAB LUCKNOW … FOND MEMORIES
(Is a fiction written around the great city of Nawabs—Lucknow. It describes Lucknow in great detail and also talks about its Hindu-Muslim amity. That happens to be its undying characteristic. The book was launched in Lucknow International Literary Festival of 2014)
REFRACTIONS … FROM THE PRISM OF GOD
(Co-published by Cankids–Kidscan, a pan India NGO and Shravan Charity Mission, that works for Child cancer in India. The book is endorsed by Ms Preetha Reddy, MD Apollo Hospitals Group. It was launched in Lucknow International Literary Festival 2016)
TYPICAL TALE OF AN INDIAN SALESMAN
(Is a story of an Indian salesman who is, humbly qualified. Yet he fights his ways through unceasing uncertainties to reach the top. A good read not only for salesmen. The book was launched on 10th February, 2018 in Gorakhpur Lit-Fest. Now available in Amazon, Flipkart and Onlinegatha)
RHYTHM … in poems
(Published in January 2019. The book contains 50 poems. The poems describe our day to day life. The book is available in Amazon, Flipkart and Onlinegatha)
(ALL THE ABOVE TITLES ARE AVAILABLE FOR SALE IN AMAZON, FLIPKART AND OTHER ONLINE STORES OR YOU COULD EVEN WRITE TO US FOR A COPY)