List of 'President & Prime Minister'

President of India

Rajendra Prasad 1950 to 1962

Sarvepalli Radhakrishnan 1962 to 1967

Zakir Hussain 1967 to 1969

V.V Giri 1969 to 1974

Fakhruddin Ali Ahmed 1974 to 1977

Neelam Sanjiva Reddy 1977 to 1982

Giani Zail Singh 1982 to 1987

R Venkataraman 1987 to 1992

Shankar Dayal Sharma 1992 to 1997

K R Narayanan 1997 to 2002

APJ Abdul Kalam 2002 to 2007

Pratibha Patil 2007 to 2012

Pranab Mukherjee 2012 to 2017

Ram Nath Kovind 2017 to Present

Prime Minister of India

Jawaharlal Nehru (1947–64)

Gulzarilal Nanda (1964; 1st time)

Lal Bahadur Shastri (1964–66)

Gulzarilal Nanda (1966; 2nd time)

Indira Gandhi (1966–77; 1st time)

Morarji Desai (1977–79)

Charan Singh (1979–80)

Indira Gandhi (1980–84; 2nd time)

Rajiv Gandhi (1984–89)

V.P. Singh (1989–90)

Chandra Shekhar (1990–91)

P.V. Narasimha Rao (1991–96)

Atal Bihari Vajpayee (1996; 1st time)

H.D. Deve Gowda (1996–97)

Inder K. Gujral (1997–98)

Atal Bihari Vajpayee (1998–2004; 2nd time)

Manmohan Singh (2004–14)

Narendra Modi (2014–2018 )

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'The 42' Tallest building in India

The 42 The 42’ in Kolkata has now become India’s tallest building. After the construction of its 65th floor, 42 Chowringhee in Kolkata has become the country’s tallest building with a height of 268 meters. Dwarfing all the other major buildings around the city like Tata Centre and Everest House, this new wonder is redefining the skyline of Kolkata. The second tallest building in the city is at a whooping 167.8 meters and it’s named Urbana. Sadly, it falls just a 100 metes short to ‘The 42’. Owners of "The 42" The 42 project in Chowringhee, Kolkata is being built by a four-member consortium- Mani Group, Salarpuria Sattva, Alcove Realty and Diamond Group. Hafeez Contractor is working as a consultant on this project which is scheduled for delivery in December 2018.

"Types of Galaxies"

How many types of galaxies are there in the Universe? Edwin Hubble divided the galaxies into three basic groups: ellipticals, spirals, and irregulars. The ellipticals are smooth and round or elliptical, the spirals are flat with a spiral pattern in their disk, and the irregulars have stars and gas in random patches. Most galaxies are small and faint so only the luminous galaxies are seen at great distances. These spectacular galaxies tend to be either the elliptical or spiral type, so they are the ones often displayed in astronomy textbooks. Sprial Galaxy 15 percent of galaxies are spirals, flat galaxies with a central light concentration that show spiral arms in an outer disk. The central regions of spiral galaxies appear reddish and are composed of older Population II stars, such as those in the halo of the Milky Way Galaxy. Spiral galaxies range from intermediate to large galaxies, with masses in the range of 10 9 to 10 12 solar masses, diameters 6 kpc t...

सिंधु घाटी की सभ्यता: हड़प्पा सभ्यता

आज हम अपने भारत के इतिहास के बारे में पढ़ेंगे हड़प्पा सभ्यता जैसा कि आप सभी को पता है भारत की सबसे पुरानी सभ्यता सिंधु घाटी सभ्यता है जिसे हड़प्पा सभ्यता भी कहा जाता है इसका काल 2500 ईसा पूर्व से 1500 पूर्व है सिंधु घाटी सभ्यता का भारतीय इतिहास में एक विशिष्ट स्थान क्योंकि सभ्यता के आने से भारतीय इतिहास में मौर्य काल से पूर्व की विशिष्ट जानकारी प्राप्त होती है सिंधु घाटी सभ्यता विश्व की प्राचीनतम सभ्यता हूं जैसे मिश्र मेसोपोटामिया सुमेर एवं कीट के समान विकसित एवं प्राचीन थी यह ताम्र पाषाण संस्कृति भी है सर्वप्रथम 1921 में राय बहादुर दयाराम साहनी ने हड़प्पा नामक स्थान पर इस महत्वपूर्ण सभ्यता के अवशेषों का पता लगाया प्रारंभ में उत्खनन कार्य सिंधु नदी घाटी में ही किया गया तथा वही इस सभ्यता के अवशेष सर्वप्रथम प्राप्त हुए थे अतः इस सभ्यता को सिंधु घाटी सभ्यता कहा गया परंतु इस सभ्यता के अवशेष सिंधु नदी की घाटी से दूर गंगा यमुना के दोआब और नर्मदा ताप्ती के मुहाने तक प्राप्त हुए हैं अतः पुरातत्व वेदो ने पुरातत्व परंपरा के आधार पर इस सभ्यता का नाम उसके सर्वप्रथम ज्ञात स्थल के नाम प...

How to measure other "Galaxies or Planets" distance?

Several Techniques to Measure the Vast Distance Astronomers have developed several techniques to indirectly measure the vast distances between Earth and the stars and galaxies. In many cases, these methods are light year, parsec and astronomical unit. Astronomical Unit (A.U.) An astronomical unit (A.U.) is the average distance between the Earth and the Sun, which is about 93 million miles or 150 million kilometers. Astronomical units are usually used to measure distances within our solar system. For example, the planet Mercury is about 1/3 of an A.U. from the Sun, while the farthest planet, Pluto, is about 40 A.U. from the Sun (thats 40 times as far away from the Sun as the Earth is). 1 AU = 1.496 × 108 km = 93 million miles Light-Year (ly) Most objects in space are so far away, that using a relatively small unit of distance, such as an astronomical unit, is not practical. Instead, astronomers measure distances to objects which are outside our solar system in ...

Relation between "Time & Space"

What is space and time? In physics, spacetime is any mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. Spacetime diagrams can be used to visualize relativistic effects such as why different observers perceive where and when events occur differently. Another corollary of special relativity is that, in effect, one person’s interval of space is another person’s interval of both time and space, and one person’s interval of time is also another person’s interval of both space and time. Thus, space and time are effectively interchangeable, and fundamentally the same thing (or at least two different sides of the same coin), an effect which becomes much more noticeable at relativistic speeds approaching the speed of light. Einstein’s former mathematics professor, Hermann Minkowski, was perhaps the first to note this effect (and perhaps...

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