CSS, PCS, ISSB and other Competitive examination preparation

This is a very brief account of what happened in Kargil in 1999. It is meant for those readers who are totally unaware about the broad details of this operation. Ones interested in details about tactical and strategical aspects and lessons learnt etc, are requested to do their own research on the Internet. The Kargil Conflict was an armed conflict between India and Pakistan that took place between May and July 1999 in the Kargil district of Occupied Kashmir and elsewhere along the Line of Control (LOC). The conflict is also referred to as “Operation Koh-e-Paima”. MUSHARAF and JASWANT SINGH talking ABOUT KARGIL dispute in  The Outsider With Tim Sebastian show .    In India, the conflict is also referred to as  Operation Vijay  ( Hindi :  विजय , lit. "Victory") which was the name of the Indian operation to clear the Kargil sector strategic town of kargil  The cause of the conflict was the infiltration of Pakistani s...

The sun is a big ball of hot gases. The gases are converted into energy in the sun's core. The energy moves outward through the interior layers, into the sun's atmosphere, and is released into the solar system as heat and light. Most of the gas — about 72 percent — is hydrogen. Nuclear fusion converts hydrogen into other elements. The sun is also composed of about 26 percent helium and trace amounts of other elements — oxygen, carbon, neon, nitrogen, magnesium, iron and silicon. These elements are created in the sun's core, which makes up 25 percent of the sun. Gravitational forces create tremendous pressure and temperatures in the core. The temperature of the sun in this layer is about 27 million degrees F (15 million degrees C). Hydrogen atoms are compressed and fuse together, creating helium and a lot of energy. This process is called nuclear fusion. WHAT IS SUN video explains everything. Abundance of elements Astronomers who have studied the...

How are mountains formed? Mountains are formed by slow but gigantic movements of the earth's crust (the outer layer of the Earth). The Earth's crust is made up of 6 huge slabs called plates, which fit together like a jigsaw puzzle. When two slabs of the earth's crust smash into each other the land can be pushed upwards, forming mountains. Many of the greatest mountain ranges of the world have formed because of enormous collisions between continents. Watch HOW MOUNTAINS ARE FORMED video made easy?  Mountains form in different ways Sometimes the crust has folded and buckled, sometimes it breaks into huge blocks. In both cases, great areas of land are lifted upwards to form mountains. Other mountains are formed by the earth's crust rising into a dome, or by volcanic activity when the crust cracks open. What different types of Mountains are there? There are five basic kinds of mountains: Fold Mountains (Folded Mountains) Fault-block Mountain...

Lost your contact lenses? Crushed your glasses? Well you need stare at blurry public transport signs no longer, as simple physics can be exploited to give your vision a small boost using just your hand. The 'trick' was posted in YouTube video form by the channel  Minute Physics  and has been stunning bespectacled users in the hours following. It's very simple: Make a tiny hole with your finger (curling up index finger works best) and look through it. Whatever you're viewing, be it text, object or vista should appear considerably clearer. It is hardly a replacement for corrective optical devices but a pleasing 20-second time waster all the same. "I am very nearsighted, and I could read the text on my book across the room. Incredible!" one YouTube user commented.  "It works! That’s incredible! I’m actually stunned right now, this is great." said another. There's a full explanation of how the trick works in the video, ...

Global warming  and climate change are terms for the observed century-scale rise in the average temperature of the Earth'sclimate system and its related effects. Multiple lines of scientific evidence show that the climate system is warming.Although the increase of near-surface atmospheric temperature is the measure of global warming often reported in the popular press, most of the additional energy stored in the climate system since 1970 has gone into ocean warming. The remainder has melted ice, and warmed the continents and atmosphere.Many of the observed changes since the 1950s are unprecedented over decades to millennia. How Worried Should We Be About Climate Change? Could China Save The World? Discovery Channel - Global Warming, What You Need To Know, with Tom Brokaw The Basics Carbon dioxide and other global warming pollutants are collecting in the atmosphere like a thickening blanket, trapping the sun's heat and caus...

What is Acid Rain? Acid rain is a result of air pollution. When any type of fuel is burnt, lots of different chemicals are produced. The smoke that comes from a fire or the fumes that come out of a car exhaust don't just contain the sooty grey particles that you can see - they also contains lots of invisible gases that can be even more harmful to our environment. Power stations, factories and cars all burn fuels and therefore they all produce polluting gases. Some of these gases (especially nitrogen oxides and sulphur dioxide) react with the tiny droplets of water in clouds to form sulphuric and nitric acids. The rain from these clouds then falls as very weak acid - which is why it is known as "acid rain". What and how is acid rain formed learn in depth with video animation AWARENESS COMMERCIAL on acid rain : How acidic is acid rain? Acidity is measured using a scale called the pH scale. This scale goes from 0 to 14. 0 is the most a...