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october 3rd week current affairs
Author : uppy
Category : Science & Technology Current
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science and Technology oct 3rd week 5015 current affairs

october 3rd week current affairs

1) Indian scientists solve a century-old light puzzle.

  • The scientists Hermann Minkowski and Max Abraham came up with contradicting equations that both seemed to be supported by contradicting experimental data, the ‘controversy’ has raged on without a solution as equipment failed to be sensitive enough to detect the light-induced tiny deformations at the interface between air and water.
  • However, using an indigenous experimental set-up, researchers from the Indian Institute of Science Education and Research (IISER), Mohali, have achieved a breakthrough that shows that Minkowski was right light does gain momentum as it enters another medium.
  • The “simple” setup involved shining a laser on a water drop to study the chain of events. The Helium-Neon laser was incident at the Total Internal Reflection a critical angle where all the light is reflected, like a mirror.
2)Flight of Nirbhay Missile Aborted after 700 Seconds of Launch.
 
  • The test flight of India’s nuclear-capable `Nirbhay` long-range subsonic tactical cruise missile, launched from the Integrated Test Range (ITR) at Chandipur in Odisha, was aborted nearly 12 minutes after lift-off.
  • The missile took off from a specially-designed launcher at launch complex-3 of ITR.
  • The mission was aborted after 700 seconds of flight. Powered by a solid rocket motor booster, the missile has a strike range of more than 1000 km. Nirbhay missile, with a turbofan engine, is guided by a highly-advanced inertial navigation system.
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3) Flight of Nirbhay Missile Aborted after 700 Seconds of Launch.

  • The test flight of India’s nuclear-capable `Nirbhay` long-range subsonic tactical cruise missile, launched from the Integrated Test Range (ITR) at Chandipur in Odisha, was aborted nearly 12 minutes after lift-off.
  • The missile took off from a specially-designed launcher at launch complex-3 of ITR. All initial critical operations such as booster ignition, booster separation, wing deployment and engine start were successfully executed and Nirbhay reached the desired cruise altitude.
  • During 700 seconds of flight all the subsystems of Nirbhay cruise Missile functioned satisfactorily and met all the desired functions. The mission was aborted after 700 seconds of flight. Powered by a solid rocket motor booster, the missile has a strike range of more than 1000 km. Nirbhay missile, with a turbofan engine, is guided by a highly-advanced inertial navigation system.
4) Typhoon Koppu hits northern Philippines.
 
  • Powerful Typhoon Koppu (also known as Lando) has hit the northern Philippines battering the coast with powerful winds with speed of 240 kph.
  • The eye of tropical cyclone (typhoon) Koppu has struck the remote northern coastal town of Casiguran which is 215 kms northeast of Philippines capital city Manila.
  • US military’s Joint Typhoon Warning Center has categorised this typhoon equivalent of a Category 4 on the Saffir-Simpson Hurricane Wind Scale.
 
5) NASA’s newly revealed images showing sun’s coronal hole.
 
  • Solar Dynamics Observatory this Friday confirmed a coronal hole at the topmost layer of the sun. According to National Oceanic and Atmospheric Administration (NOAA) officials, as the coronal hole continues it way westward on the sun’s surface, the solar winds will continue to be strong.
  • The hole, called the coronal or dark spot, has the size 50 times that of the Earth and its magnetic field is releasing an ultrafast solar wind, that is harmless to humans of Earth but can interfere with some satellite communications and few high-altitude radio signals.
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6) NATO launches biggest Trident Juncture Military Exercise in Italy.

  • North Atlantic Treaty Organization (NATO) has launched Trident Juncture Military Exercise in Italy to test the alliance’s ability to respond to new security threats.
  • It will also demonstrate NATO’s capability to deal with conventional military engagements to more subtle hybrid warfare techniques and propaganda. It is the biggest military exercise conducted by alliance in past 13 years as it has mobilized around 36,000 soldiers, sailors and airmen from more than 30 countries of NATO.
Key facts:
  1. The operational centre for the exercise is based in the Sicilian city Trapani (Italy). It will take place till early November 2015 and extend into Spain, Portugal and adjacent waters.
  2. The exercise envisions a fictitious invasion of a small alliance member by a large country, followed by creating a crisis with ethnic and religious dimensions.
  3. It also envisions threats to energy supplies and navigational freedom along with risks of terrorism and cyberattacks.
Background:
 
  1. Last time such large-scale military exercises were held during the Cold War era. But now they are held due to recent changes in global geopolitical scenario in Mediterranean and West Asian region.
  2. The geopolitical scenario has changed after Russia’s annexation of Crimea peninsula of Ukraine in February 2014 followed by support of eastern Ukrainian separatists and attacks against moderate rebels in Syria. 
7) World’s first auto-follow drone for adventure sports.
 
  • Drones provide an extremely flexible platform for photography, especially for extreme sports. They allow you to get the kind of helicopter shots that were taken by professionals with helicopters. However, piloting a drone is not easy and you will need an operator unless you have Airdog.
  • The Airdog is quite simple to use.
  • The Airdog is a quadcopter that has roto arms that you can fold in to ease storage when you are not using it. it is completely autonomous and needs no remote control to fly.
  • It has been designed to shut down its motors in case it collides with anything and is quite easily repairable if it is damaged. The creators say that it is quite durable and can be used in sub- zero temperatures, in winds up to 23 knots, and in rain, sleet and snow.
 
8) China’s first high-resolution satellite Ziyuan III maps large part of World.

  • The Ziyuan III, China’s first high-resolution stereo mapping satellite for civilian use, has sent back visual data covering 69.45 million square kilometres of the globe since it was launched in January 2012.
  • The satellite produced images of 190 million square kilometres of fields for mapping, land, mining and water conservancy, ridding the country of its reliance on imports of hi-resolution satellite images.
  • The Ziyuan III - 2 satellite is planned to be launched in 2016, allowing the two orbiters to form a network. Another stereo mapping satellite Gaofen-7 is expected to be launched in 2018.
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