Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Tuesday, 23 June 2009

Random Facts

Some interesting/funny/strange facts (in no particular order) from the realm of Science.
  1. Avogadro, the Italian who proved that two equal volumes of gases at the same pressure and temperature contain the same number of molecules, had a splendid name of Lorenzo Romano Amadeo Carlo Avogadro, Count of Quarequa and Correto.
  2. Mandeleyev was said to have been inspired by the card game of Solitaire in inventing the Periodic Table.
  3. Max Planck was often very unlucky in life. His beloved first wife died early. The younger of the two sons was killed in WW-I. Both of his sisters died in childbirth. In 1944 an Allied bomb fell on his house and he lost everything - papers, diaries, a lifetime of accumulations. The following year his other son was caught in a conspiracy to assassinate Hitler and executed.
  4. If you are an average-sized adult you will contain within your modest frame no less than 7 x 10^8 joules of potential energy - enough to explode with the force of 30 very large hydrogen bombs, assuming you knew how to liberate it and really wished to make a point.
  5. Edwin Hubble was very athletic in his childhood. At a single high-school track meeting in 1906, he won the pole vault, shot-put, discus, hammer throw, high jump and was on the winning mile relay team. He set a state record in High-Jump in Illinois
  6. After Edwin Hubble died of a heart attack in 1953, his wife declined to have a funeral and never revealed what she did with his body. For a memorial of the greatest astronomer of the century, you must look into the skies at the Hubble Space Telescope.
  7. Physicists are notoriously scornful of scientists from other fields. When the great Austrian physicist Wolfgang Pauli's wife left him for a chemist, 'Had she taken a bullfighter I would have understood. But a chemist ... ?' he rmarked in wonder to a friend. Rutherford suggested that 'All science is either physics or stamp collecting'. The irony is that his award of the Nobel Prize in 1908 was in Chemistry, not Physics.
  8. The Picture of an atom that nearly everybody has in mind is of an electron or two flying around a nucleus, like planets orbiting a sun. This image was created in 1904 by a Japanese physicist named Hantaro Nagaoka. CERN still uses Nagaoka's image as the logo on its website.
  9. Niels Bohr had an idea about the structure of the atom so exciting that he postponed his honeymoon to write what became a landmark paper.
  10. Tim Berneers-Lee invented the WWW while working for CERN. It was a by-product.
  11. Francium is so rare that it is thought that our entire planet may contain, at any given moment, fewer that twenty francium atoms.
  12. Charles Darwin and Abraham Lincoln were born on the same day - 12th February, 1809.
  13. Darwin's The Origin of Species was originaly titled On the Orgin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life
  14. Modern human beings, genetically, are 98.4% identical to modern Chimpanzees.
  15. Tokyo is known to be in the meeting point of 3 tectonic plates. The Great Kanto earthquake in 1923, with a magnitude of 8.3, killed about 200,000 people out of 3 million in the city. Tokyo is now harbouring 30 million people. If such an earthquake occurs again, the potential economic cost could be as high as $7 trillion. Dare to think how many will die.
All these points were taken from the book A Short History of Nearly Everything by Bill Bryson. The book is impressive. Full of strange facts and interesting findings. Very short biographies of great scientists those who worked in many departments, those who searched for the clues of life deep under the ground to high above in the heavens. As John Waller from the Guardian says about the book, "It's hard to imagine a better rough guide to science".

Thursday, 12 June 2008

The Last Three Minutes

Most of the people know The Big Bang theory ( not the TV Series , the actual theory ). Though, not to its theorotical roots, people know how the universe popped out of nowhere. Although, there are other theories about the beginning of the universe, this one is the most popular one. Physicists tried to look into the beginning of the universe. I mean, the very beginning of all the things. What happened in the first three minutes was, in less technical detail, penned down by American Physicist Steven Weinberg in 1977. This book was aptly named "The First Three Minutes". In the past few decades , there has been wonderful evolution in the theories that try to explain the universe. Many variants of the string theory, trying to explain black holes etc. have been heard of. So far so good.

With the people these days making themselves and others aware of global warming, protecting the nature and taking steps inorder to do so, a strange thought occured to me. What is the purpose of life ? Not indivually. The who point of life on earth. The purpose of Humanity. Are we here to achieve something ? If so, what would that be ?

Every project has a specific goal. If the goal is not reached, the project is said to be failed. When the goal is reached the project is closed. ( Please don't talk about maintenance ) Can there be a project who's goal is never truly reached ?

If humanity could some how survive for eternity, what's the purpose ? What is the meaning of an existence toward a destination that is never reached ? If there is a purpose and the goal is reached, the universe must end because it's existence is pointless there on. If it survives forever, it is hard to imagine that there is any purpose at all. So, is cosmic death the price that has to be paid for cosmic success ?

Cosmic death!? Hard to think about. All that I ever heard of previously was that if the density of the universe is less than the critical density, it would continue expanding for ever. If it is more than the critical density, it would fall back. The galaxies that are now receding from us, might one day start coming back. So, what is the ultimate fate of the universe ? Will it squash back to the one single point from where it all came from ? Eternal expansion or eventual extinction ? Many such questions were answered in a book entitled "The Last Three Minutes". If the Universe were to end one day ( perhaps, the notion of day/night would then mean nothing ) , how would it be ? No math at all. Just simple analogies all the way to the end. A highly recommended book it would be. A perfect blend of technical detail and philosphy. I returned it to the library. You might find it if you are 'lucky' - because, there is some tagging ( using bar code stickers) going on.