Category: English

Second Law of Thermodynamics and Entropy

 shares Love This3 Facebook1 Twitter0 WhatsApp0 Google+0 Telegram0 Email0 Gmail0 Facebook Messenger0In everyday life we experience many limitations on energy transfers. A hot bowl of soup becomes cooler, for example, but a cool bowl of soup never spontaneously heats up. The second law of thermodynamics is one of the fundamental theories of nature that explains this (along with many other things). The most intuitive statement of the second law of thermodynamics is that heat tends to diffuse evenly: heat flows from hot to cold. Heat is a quantity of energy (joules, calories, etc.). The quantity of heat energy thus...

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ചിമ്പാന്‍സികള്‍ നമ്മുടെ ആരാണ്? 

ഏകദേശം 50 ലക്ഷം വര്‍ഷങ്ങള്‍ മുന്‍പ് ആഫ്രിക്കയിലെ വരണ്ട പുല്‍മേടുകളില്‍ ജീവിച്ചിരുന്ന ആള്‍ക്കുരങ്ങുകളില്‍ പരിണാമം സംഭവിച്ചു ഒരു ശാഖ ചിമ്പാന്‍സികളിലെക്കും മറ്റൊന്ന് മനുഷ്യന്റെ ദിശയിലേക്കും നീങ്ങി.

ചിമ്പാന്‍സികളിലേക്ക് തിരിഞ്ഞ പരിണാമപാതയില്‍ നിന്നുമാണ് ബൊണോബോ (bonobo) എന്ന ഒരല്പം കുള്ളന്മാരായ ചിമ്പാന്‍സികള്‍ പരിണമിച്ചത്‌. ഇവയെ പിഗ്മി ചിമ്പാന്‍സികളെന്നും വിളിക്കുന്നു. ഏകദേശം 10 ലക്ഷം വര്‍ഷങ്ങള്‍ക്കു മുന്‍പാണ് ബൊണോബോ ചിമ്പാന്‍സികള്‍ ഉണ്ടാകുന്നത്. കോംഗോ നദി രൂപപ്പെട്ടപ്പോള്‍ നദിയുടെ ഇരുഭാഗത്തും പെട്ടുപോയ ചിമ്പാന്‍സികള്‍ അവിടുത്തെ ഭൌതീക സാഹചര്യം അനുസരിച്ച് വ്യത്യസ്തമാകുകയായിരുന്നു.

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Women’s March on Washington, D.C. Made History

The most important element of the right to assembly is the freedom of expression. On Saturday, January 21, 2017, the day after President Trump was sworn in as the 45th President of the United States of America (USA), more than 5 million people across the nation — including myself — peacefully participated in the Women’s March. The goal of the March was to send President Trump and his administration a message that women’s rights are human

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Electricity and Electromagnetism – Part 2

 shares Love This0 Facebook0 Twitter0 WhatsApp0 Google+0 Telegram0 Email0 Gmail0 Facebook Messenger0Electricity and Electromagnetism – Part 2 The beginning of electricity’s modern era can be traced to a small Danish classroom in 1820. There, in front of a room full of physics students, Hans Christian Oersted (1777–1851) discovered that electricity can produce magnetic fields. Oersted was the son of a Danish pharmacist, and he had planned to follow his father’s profession, but he became captivated by electrical studies in 1800. He gained great popularity as a science lecturer and was given a professorship at the University of Copenhagen in...

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Electricity and Electromagnetism

 shares Love This0 Facebook0 Twitter0 WhatsApp0 Google+0 Telegram0 Email0 Gmail0 Facebook Messenger0Electricity and Electromagnetism Can we even imagine a world without electricity? But as unimaginable it may sound to us now, the story of electricity for practical use has been around for only few centuries. Most modern uses of electricity rely on electrons that move. Newton’s first law of motion demands that electrons can’t move unless a force is applied. A method for applying such a force was discovered in 1794, when the Italian physicist Alessandro Volta (1745–1827) invented the battery. Alessandro Giuseppe Antonio Anastasio Volta was born to...

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