Transport System of India

Roadways
India has 3.3 million km of road network and the second largest in the world. The road traffic accounts for about 80% of the passenger traffic and 60% of the goods. In India, roadways have preceded railways. 43.5% of the total roads is surfaced roads.In India, roads are classified in the following six classes according to their capacity. 
Golden Quadrilateral Super Highways:The government has launched a major road development project linking Delhi-Kolkata- Chennai-Mumbai and Delhi by six-lane Super Highways has a total length of 5846kms. The North-South corridors linking Srinagar (Jammu & Kashmir) and Kanyakumari (Tamil Nadu) and East-West Corridor connecting Silcher (Assam) and Porbander (Gujarat) are part of this project. The project has a total length of about 7300km. The major objective of these Super Highways is to reduce the time and distance between the mega cities of India. These highway projects are being implemented by the National Highway Authority of India (NHAI). 
National Highways: National Highways link extreme parts of the country. These are the primary road systems and are laid and maintained by the Central Public Works Department (CPWD). A number of major National Highways run in North-South and East-West directions. The historical Sher-Shah Suri Marg is called National Highway No.1, between Delhi and Amritsar. The total length of the National Highways is 58,112 km. constitutes only two percent of the total road length but carry 40% of the total road traffic. NH 7 passes through Jabalpur, Nagpur, Hyderabad, Bangalore and Madurai and is the longest one with the total length of 2369 km. 
State Highways: Roads linking a state capital with different district headquarters are known as State Highways. These roads are constructed and maintained by the State Public Works Department (PWD) in State and Union Territories. These roads constitute 5.6% of total length of all roads. 
District Roads: These roads connect the district headquarters with other places of the district. These roads are maintained by the Zilla Parishad. 
Border Roads: Apart from these, Border Roads Organisation a Government of India undertaking constructs and maintains roads in the bordering areas of the country. This organisation was established in 1960 for the development of the roads of strategic importance in the northern and northeastern border areas. These roads have improved accessibility in areas of difficult terrain and have helped in the economic development of these areas. 
Road Density : The length of road per 100 sq. km of area is known as density of roads. Distribution of road is not uniform in the country.

Lowest in Jammu and Kashmir (10 km).
Highest in Kerala (375 km)
National Average (75 km).
Density of metalled roads: National average (42.4 km)
Goa has the highest density (153.8 km)
Jammu and Kashmir has the lowest density (3.7 km).

Railways
Railways are the principal mode of transportation for freight and passengers in India. Indian Rail transport is largest in Asia and fourth largest in the world. The Indian Railways is the largest public sector undertaking in the country with 1.6 million staff. The first train steamed off from Mumbai (Bori Bunder) to Thane in 1853, covering a distance of 34 km. The Indian Railway have a network of 7, 031 stations spread over a route length of 63, 221 km. with a fleet of 7817 locomotives, 5321 passenger service vehicles, 4904 other coach vehicles and 228, 170 wagons as on 31 March 2004. The Indian Railway is now reorganized into 17 zones.

ZONES
Name
Head Quarters
1
Central
Mumbai (Chhatrapati Shivaji Terminus)
2
Eastern
Kolkata

3
Northern
Delhi

4
Southern
Chennai

5
Western
Mumbai (Churchgate)

6
North East
Gorakhpur

7
North East Frontier
Malegaon (Guwahati)

8
South East
Kolkata

9
South Central
Secundrabad

10
East Coast
Bhubneshwar

11
East Central
- Hajipur

12
North Central
Allahabad

13
North Eastern
Jaipur

14
South Western
Bangalore

15
West Central
Jabalpur

16
South East Central Railway
Bilaspur
17
Konkan Railway
Navi Mumbai

Units manufacturing rolling stocks run by Indian Railways are
Chittaranjan locomotive works: Chittaranjan (W.Bengal).
Diesel locomotive works: Varanasi (Uttar Pradesh).
Integral Coach Factory: Perambur (Tamil Nadu).
Rail Coach Factory: Kapurthala (Punjab).
Wheel and Axle plant: Bangalore.
Diesel Component works: Patiala (Punjab).
M/s Jessops (Kolkata).
Bharat Earth Movers Ltd, (Bangalore).
Railway Track Density:
High Density : Delhi, Punjab, Bihar, W. Bengal, Haryana, Assam, Chandigarh, Pondicherry, Tamil Nadu, and Gujarat.
Medium Density (1525 km/ 1000 sq.km): this covers the western part of the peninsula incorporating Goa, Maharashtra, Karnataka, Andhra Pradesh, Kerala and Rajasthan.
Low Density (515km/ 1000 sq.km): eastern part of the peninsular India. Orissa and Madhya Pradesh (undulating topography, low population density and poor economic development have led to low density of rail network.Very Low Density

Waterways:
India has inland navigation waterways of 14,500 km in length. Out of these only 3,700 km are navigable by mechanised boats.Out of the 4,300 km canal length, 900 km is navigable but only 330 km is used.
The following waterways have been declared as the National Waterways by the Government:
The Ganga river between Allahabad and Haldia (1620 km)-N.W. No.1
The Brahmaputra river between Sadiya and Dhubri (891 km)-N.W. No.2
The West-Coast Canal in Kerala (Kottapurma-Komman, Udyogamandal and Champakkara canals-205 km) – N.W. No.3
The other viable inland waterways include the Godavari, Krishna, Barak, Sunderbans, Buckingham Canal, Brahmani, East-west Canal and Damodar Valley Corporation Canal.
The Inland Water Ways Authority of India was set up in 1986 for the regulation, maintenance and development of National Waterways.


SEAWAYS:
With a long coastline of 7,516.6 km, India is dotted with 12 major and 184 medium and minor ports. These major ports handle 95 per cent of India’s foreign trade.
Mumbai is the biggest port with a spacious natural and well-sheltered harbour.
The Jawaharlal Nehru port was planned with a view to decongest the Mumbai port and serve as a hub port for this region.
Marmagao port (Goa)is the premier iron ore exporting port of the country. This port accounts for about fifty per cent of India’s iron ore export. New Mangalore port, located in Karnataka caters to the export of iron ore concentrates from Kudremukh mines. Kochi is the extreme south-western port, located at the entrance of a lagoon with a natural harbour.
Kandla in Kuchchh was the first port developed soon after Independence to ease the volume of trade on the Mumbai port, in the wake of loss of Karachi port to Pakistan after the Partition. Kandla is a tidal port.Moving along the east coast, you would see the extreme south-eastern port of Tuticorin, in Tamil Nadu. This port has a natural harbour and rich hinterland. Thus, it has a flourishing trade handling of a large variety of cargoes to even our neighbouring countries like Sri Lanka, Maldives, etc. and the coastal regions of India. Chennai is one of the oldest artificial ports of the country. It is ranked next to Mumbai in terms of the volume of trade and cargo.
Vishakhapatnam is the deepest landlocked and well-protected port. This port was, originally, conceived as an outlet for iron ore exports. Paradip port located in Orissa, specialises in the export of iron ore. Kolkata is an inland riverine port. This port serves a very large and rich hinterland of Ganga- Brahmaputra basin. Being a tidal port, it requires constant dredging of Hoogly. Haldia port was developed as a subsidiary port, in order to relieve growing pressure on the Kolkata port.

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Space Science

Famous astronomers

John Couch Adams: (Britain, 1819-92) studied the Leonid meteor shower and predicted the existence of Neptune, which was discovered in 1846.
Edward Emerson Barnard: (USA, 1857-1923) discovered Barnard's Star and Amalthea, a moon of Jupiter.
Nicolaus Copernicus: (Poland, 1473-1543) showed that the Sun was at the centre of the Solar System.
Galileo Galilei: (Italy, 1564-1642) was a mathe- matician who made important discoveries concerning gravity and motion. He built some of the first telescopes used in astronomy and used them to discover many previously unknown space objects.
George Ellery: Hate (USA, 1868-1938) pioneered the astronomical study of the Sun and founded observatories, one with a major telescope named after him.
Edmond Halley: (Britain, 1656-1742) predicted the orbits of comets, including the one that bears his name.
William Herschel: (Germany/Britain, 1738-1822) built huge telescopes, compiled catalogues of stars and discovered moons of Saturn and Uranus.
Edwin Hubble: (USA, 1889-1953) made important discoveries about galaxies. The Hubble Space Telescope was named in his honour.
Christiaan Huygens: (Holland, 1629-95) discovered Saturn's rings and devised the wave theory of light.
Percival Lowell: (USA, 1855-1916) was founder of the Lowell Observatory, Arizona. He predicted that a planet would be found in the region where Pluto was later discovered.
Charles Messier: (France, 1730-1817) studied comets and eclipses, but he is best known for his catalogue of stars.
Isaac Newton: (Britain, 1643-1727) is considered one of the greatest of all astronomers. His theories of gravity and the motions of planets revolutionized the subject.
Heinrich Olbers: (Germany, 1758-1840) disco- vered asteroids and comets, one of which was named after him. Giuseppe Piazza: (Italy, 1746-1826) compiled star catalogues and discovered the first asteroid, Ceres, in 1801.
Some Milestones of Space Science

Year
Milestone
585 BC
First prediction of eclipse of the Sun
130 BC
Hipparchus calculates distance and size of Moon
AD 1543
Copernicus shows that the Sun is at the centre of the Solar System
1609
Johannes Kepler describes laws of planetary motion
1610
Galileo Gatitei discovers moons of Jupiter
1655
Christiaan Huygens discovers Titan, moon of Saturn
1668
Isaac Newton builds first reflecting telescope
1687
Isaac Newton publishes theories of motions of planets, etc
1705
Edmond Halley predicts return of comet
1671-84
Giovanni Cassini discovers four moons of Saturn
1774
Charles Messier compiles star catalogue
1781
William Herschel discovers 7th planet, Uranus
1801
First asteroid, Ceres, discovered by Giuseppe Piazzi
1846
Johann Galle and Urbain Le Verrier discover 8th planet  Neptune
1787-89
Herschel finds two moons of Uranus and two of Saturn
1839-40
First photographs of the Moon
1894
Flagstaff Observatory, Arizona, founded
1905
Einstein's Special Theory of Relativity first proposed
1908
Giant and dwarf stars described
1923
Galaxies beyond the Milky Way proved
1927
Big Bang theory first proposed
1930
Pluto, the 9th planet, discovered by Clyde Tombaugh
1959
First photographs of the far side of the Moon by Soviet satellite Luna 3
1961
First quasars discovered
1967
First pulsars identified
1971
Black hole first detected
1973
Skylab space laboratory launched
1976
Rings of Uranus are discovered
1977
Voyager deep space probes are launched
1971
Mariner 9 spacecraft maps Mars
1980
Voyager 1 explores Saturn
1978
Space probes Pioneer 1 and 2 reach Venus
1985-89
Voyager 2 discovers moons of Uranus and Neptune
1994
Comet Shoemaker-Levy observed crashing into Jupiter
1995
Galileo probe reaches Jupiter
1997
Mars Pathfinder lands
1997
Cassini probe launched to Saturn
1998
International Space Station construction starts
1999
Chandra X-Ray Observatory launched
2003
Galileo probe deliberately crash-landed on Jupiter
2006
New Horizons space probe launched to Pluto




























































Observatory

Royal Observatory, Greenwich, London Founded by King Charles II in 1675, but atmospheric and light pollution in London reduced its efficiency. In 1884 the Prime or Greenwich Meridian, 0°, which passes through the Observatory, was adopted as the basis for all mapping and measurements. Longitude measurements refer to west or east of the meridian. 
Herschel's "Forty-foot" reflector, Slough A giant telescope built in 1788 with a 1.2m mirror. 
Birr Castle, Co. Offaly, Ireland the Earl of Rosse's 1.8m reflecting telescope, built in 1845, was used to discover the spiral form of galaxies. It was the world’s largest until the opening of Mount Wilson and it was recently restored and opened to the public. 
Yerkes Observatory, Williams Bay, Wisconsin, USA this 1m telescope is the biggest refracting instrument made up to this time. It was completed in 1897. 
Mount Wilson Observatory, California, USA The telescope was installed in 1917 with a mirror size of 2.5m. It was the world's largest until the Hale. 
Hale Telescope, Palomar Observatory, California, USA The Hate's 5m telescope was first used in 1949. Jodrell Bank, Cheshire Britain's first and once the world's largest radio telescope, with a 76m dish, began operating in 1957.









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