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26 JULY, 2017 (MAINS)



Q1. “The Indian civilization, one of the oldest in the world, has a strong tradition of science and technology.” Mention any three major contributions of Indians in the field of science and Technology. (200 words)


Please write the answer in comments section

  • Ashish

    Mangalyaan, or Mars-Craft, this program by own space research organisation has been praised as one of the most low cost but high functioning space missions till date. With this scientific development, Indians can reach Mars orbit on its first attempt. The brain behind the operation is actually credited to 14 scientists of ISRO.
    India’s first moon probe was efficaciously inserted into the lunar orbit in 2008 and pushed India’s space program into the world map, putting India side by side with NASA and the European Space Agency. Chandrayaan’s greatest achievement was the discovery of the extensive presence of water molecules in the lunar soil.
    Raman Effect:
    He discovered that, when light traverses a transparent material, some of the deflected light changes in wavelength. This phenomenon is now called the Raman scattering and is the result of the Raman Effect.

    Saha Equation
    This equation is one of the basic tools for interpretation of the spectra of stars in astrophysics. His theory of high-temperature ionization of elements and its application to stellar atmospheres, as expressed by the Saha equation, is fundamental to modern astrophysics; subsequent development of his ideas has led to increased knowledge of the pressure and temperature distributions of stellar atmospheres.
    By studying the spectra of various stars, one can find their temperature and from that, using Saha’s equation, determine the ionisation state of the various elements making up the star.