the road can burgeon and grow. Are you familiar with the work of Marie Curie? Born in Warsaw‚ Poland on November 7‚ 1867. Curie was a chemist and physicist. She and her husband‚ Pierre‚ won the Nobel Prize in 1903 for their discovery of the element radium. In 1911‚ MAries became the first person to win the Nobel Prize twice! She won the second award for her study of radioactivity. In 1934 death befell upon Maries‚ caused by her long period of contact with
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Concepts of Radiation Radiation * Emission of energy from an atom and the transmission of this energy through space. * Energy propagated in a material medium or space. * Energy in transit. What are the types of radiation? * Radiation is of two general types in our environment. * They are called non-ionizing and ionizing. Ionization * the energy transferred to the electrons causes them to be pulled away or removed from an atom entirely. * The result is the
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of transport and communications. We have cars‚ buses‚ motor-cycles‚ aeroplanes‚ ships‚ etc. for travelling. Medical science has made rapid change in our life. The curing of different diseases have been successfully checked. Inventions of X-ray‚ radium‚ etc‚ have helped us a lot in diagnosing and curing various diseases. Wonders of Science BK:DOGER PG:66 This is the age of science. Science has changed the entire world. It is not the
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husband in 1926. Her parents were politically active and worked to combat fascism and Nazism. Family-Her parents were Pierre and Marie Curie. Her father was a French physical chemist‚ he won the Nobel Prize with Marie Curie because they discovered radium and polonium during radioactivity. He was born May 15‚ 1859 in Paris‚ France and he died on April 19‚ 1906‚ in Paris. Her mother is famous for her work on radioactivity and she won the Nobel Prize twice. She was born November 7‚ 1867‚ in Warsaw‚ Congress
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Who invented the periodic table? Dmitri Mendeleev invented the periodic in 1869‚ 5 years after John Newlands put forward his law of Octaves. Part of Dmitri’s periodic table He realised that the physical and chemical properties of elements were related to their atomic mass in a ’periodic’ way‚ and arranged them so that groups of elements with similar properties fell into vertical columns in his table. He also stated: The elements‚ if arranged according to their atomic mass‚ exhibit an apparent periodicity
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There is a parlor game physics students play: Who was the greater genius? Galileo or Kepler? (Galileo) Maxwell or Bohr? (Maxwell‚ but it’s closer than you might think). Hawking or Heisenberg? (A no-brainer‚ whatever the best-seller lists might say. It’s Heisenberg). But there are two figures who are simply off the charts. Isaac Newton is one. The other is Albert Einstein. If pressed‚ physicists give Newton pride of place‚ but it is a photo finish -- and no one else is in the race. Newton’s claim
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WHAT MAKES SOMEONE A HERO? Heroes of today lie in ones beliefs. It doesn’t take super powers to be a Hero. The common recognition of heroes in our day to day lives can be anyone starting from the firefighters‚ police‚ military‚ ambulance crews‚ teachers‚ doctors‚ parents and more. A person cannot be considered a Hero based on their profession. Many people think that all the soldiers or firefighters are Heroes. But it is not always true. Heroism lies within a person and rises to the occasion. If
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equilibrium thoron concentration. In the case of charcoal method the thoron was measured 4 hours after a special degassing of the sample. Using the LUK-3A device for the building materials‚ the thoron flux was measured only on a special enhanced thorium+radium sample 1. INTRODUCTION The radon isotopes 220Rn (thoron) and 222Rn (radon) were intensely studied in the last time due to their involvement in the lung cancer risk [1] and also for geological purposes [2]. The main sources of the indoor radon
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thought all elements made of same kinds of atoms. Modern Atomic Theory John Dalton‚ 1803. Atoms of different elements are themselves of difference size and mass. More Elements Discovered Marie and Pierre Curie‚ 1898. Discovered polonium‚ radium. Concluded certain elements release energy when break down‚ called radioactivity. Medical Breakthroughs Preventing Disease Breakthroughs in late 1800s as result of scientific advances earlier in century. Fundamental concepts of disease
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used and mixed with the water to create the "fracking fluid." What people do not know‚ is that up to 600 different chemicals are used in this "fracking fluid‚" including known toxins and carcinogens such as lead‚ mercury‚ uranium‚ ethylene glycol‚ radium‚ methanol‚ hydrachloric acid‚ and formaldehyde. These chemicals are known to cause cancer and other health problems. 72 trillion gallons of water and 360 billion gallons of these cancerous chemicals are needed to run our current gas wells. The fracking
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