Nuclear energy was first discovered accidentally by French physicist Henri Becquerel in 1896, when he found that photographic plates stored in the dark near uranium were blackened like X-ray plates, which had been just recently discovered at the time.[1]
Nuclear chemistry can be used as a form of alchemy to turn lead into gold or change any atom to any other atom (albeit through many steps).[2] Isotope production often involves irradiation of another isotope with alpha rays, beta rays, or gamma rays.
Iron has the highest binding energy per nucleon of any atom. If an atom of lower average binding energy is changed into an atom of higher average binding energy, energy is given off. The chart shows that fusion of hydrogen, the combination to form heavier atoms, releases energy, as does fission of uranium, the breaking up of a larger nucleus into smaller parts. Stability varies between isotopes: the isotope U235 is much less stable than the more common U238.
Creative Students of Govt. High School, Avanavanchery, bonded with lifelong friendship decided to blog together. They gave me the opportunity to co-operate with them. I really enjoy their company. May GOD bless the fellowship.
Friday, September 21, 2007
New Horizons from NASA
New Horizons is a NASA unmanned spacecraft designed to fly by Pluto and its moons (including Charon) and transmit images and data back to Earth. Mission planners hope that NASA will approve plans to continue the mission with a fly-by of a Kuiper Belt Object and return further data. A consortium of organizations, led by Southwest Research Institute and the Johns Hopkins Applied Physics Laboratory, has built the craft. The mission's principal investigator is S. Alan Stern of Southwest Research. The probe successfully launched from Cape Canaveral, Florida at 14:00 EST January 19, 2006 and is now en route to Jupiter for a gravity assist.
The primary scientific objectives are to characterize the global geology and morphology and map the surface composition of Pluto and Charon, and study the neutral atmosphere of Pluto and its escape rate. Other objectives include studying time variability of Pluto's surface and atmosphere; imaging and mapping areas of Pluto and Charon at high-resolution; characterizing Pluto's upper atmosphere, ionosphere, and energetic particle environment; searching for an atmosphere around Charon; refining bulk parameters of Pluto and Charon; and searching for additional satellites and rings.
The primary scientific objectives are to characterize the global geology and morphology and map the surface composition of Pluto and Charon, and study the neutral atmosphere of Pluto and its escape rate. Other objectives include studying time variability of Pluto's surface and atmosphere; imaging and mapping areas of Pluto and Charon at high-resolution; characterizing Pluto's upper atmosphere, ionosphere, and energetic particle environment; searching for an atmosphere around Charon; refining bulk parameters of Pluto and Charon; and searching for additional satellites and rings.
New car from new company
Mahindra-Renault new company formed in idia released their firstcar with records.The car named LOGAN bagged several national awards.This is the India's largest Wide body car.This car is luxurious and spacious and also powerful.this car only costs Rs.4.95 lakhs.
NEW CAR FROM BMW
The giant car maker BMW released their new car BMW 320d.This car reaches 100mph within just 8.2 seconds.This car having a 1995cc four cylinder engine beats every car in it's class.This car enables tiptronic automatic transmission.This car is now available in 3 models.This car has an overall mileage of 11.1kmpl has a top speed of 219kmph.This luxurious sports utility vehicle costs Rs.67 lakhs.
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