UPSC science & tech Nov - 2012

sschub - Dhanush Successfully Test Fired

  • The indigenously (home made) developed naval version of the Prithvi short-range ballistic missile.
  • Nuclear capable
  • Will be used as an anti-ship weapon as well as for destroying land targets depending on the range.

Indian Navy Successfully Test Fired BrahMos Missile

  • A supersonic cruise missile, test-fired from guided missile frigate INS Teg.
  • INS Teg = Indian Navy’s latest induction = built in Russia
  • This missile be launched from submarines, ships, aircraft or land.
  • joint venture between Republic of India’s DRDO and Russian Federation’s NPO Mashinostroeyenia who have together formed BrahMos.

Agni-IV successfully test-fired

  • Indigenously built ballistic missile
  • with support of Micro Navigation System (MINGS) along with the Ring Laser Gyro based Inertial Navigation System (RINS)

Prithvi II Missile Sucessfully Test Fired

  • Indigenously developed, nuclear-capable ballistic missile.
  • From July 2012 onwards the Strategic Forces Command had launched a series of strategic missiles including Agni-I, Agni-II and Agni-III. It is one of the five missiles that were developed under the  country's Integrated Guided Missile Development Programme.

E-cigarettes

  • Electronic cigarettes are devices that deliver nicotine through a vapour, rather than smoke. There is no combustion involved but the nicotine in the device is still derived from tobacco.
  • used by smokers trying to quit the lethal habit of smoking,can actually cause lung damage.

Radical ‘focus later’ camera

  • A “shoot now, focus later” camera.
  • users can adjust the focus after taking pictures = change focus on background from foreground.

Great Indian Bustard and Lesser Florican got region to breed

  • Great Indian Bustard = the state bird of Rajasthan
  • A small region in Rajasthan declares Specific Zone for their breeding.

Dengue transmission

  • mosquito Aedes aegypti carries the virus.
  • An dengue infected person infects many mosquitoes and these mosquitoes again infect more persons.

100 elite forces for saving Rhinos from Poachers

  • The Assam Government has deployed a 100-member team of Elite Forest Protection Force at the Kaziranga National Park.
  • The Kaziranga Nation park is also a UNESCO Heritage Site.

Hubble sees an actively star -forming galaxy

  • A new image portrays a beautifulview of the galaxy NGC 7090, as seen by the NASA/ESA Hubble Space Telescope. The galaxy is viewed edge-on meaning we cannot see the young hot stars as the spiral arms are not visible.

Global warming’s effect on tropical rainfall

  • With every 1 degree Celsius rise in temperature, tropical regions will see 10 per cent heavier rainfall extremes, with possible impacts for flooding in populous regions, a study published in Nature Geoscience finds.