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Sunday, October 31, 2010

Saturday, October 30, 2010

Byomkesh Bakshi

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Today what I'll post here that is something different from science and engineering.
Byomkesh Bakshi (ব্যোমকেশ বক্সী) is a fictional detective in Bengali literature created by Sharadindu Bandyopadhyay.
Here I'll post all the 33 stories of Byomkesh Bakshi by Sharadindu Bandyopadhyay one by one.
Please download and enjoy it.

1. Click here to download Satyanweshi

2. Click here to download Pather Kanta

Friday, October 29, 2010

ANTIMATTER
(part 5/5)

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Antimatter for daily use
    Antimatter - a mirror image of matter - is an idea so revolutionary that even its discoverer initially feared its consequences. It annihilates with ordinary matter, disappearing in a puff of energy - the ultimate scientific experiment.
    This annihilation is a compelling scenario for science fiction. The first example was robots with brains having antimatter pathways.
    Transforming all its mass into pure energy, antimatter is the perfect fuel. Star Trek's faster-than-light science-fiction spaceships use antimatter power, but research projects have also investigated the use of antimatter fuel for real.

ANTIMATTER
(part 4/5)

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COST
    Scientists claim antimatter is the costliest material to make. In 2006, Gerald Smith estimated $250 million could produce 10 milligrams of positrons (equivalent to $25 billion per gram); and in 1999 NASA gave a figure of $62.5 trillion per gram of antihydrogen. This is because production is difficult (only a few antiprotons are produced in reactions in particle accelerators), and because there is higher demand for the other uses of particle accelerators. According to CERN, it has cost a few hundred million Swiss Francs to produce about 1 billionth of a gram (the amount used so far for particle/antiparticle collisions).

Thursday, October 28, 2010

ANTIMATTER
(part 3/5)

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Antimatter Production
    Scientists in 1995 succeeded in producing antiatoms of hydrogen, and also antideuterium nuclei, made out of an antiproton and an antineutron, but no antiatom more complex than antideuterium has been created yet. In principle, antiatoms of any element could be built from readily available sources of antiparticles. Such antiatoms would have exactly the same properties as their normal-matter counterparts. The production of antielements in bulk quantities seems unlikely to ever become achievable, however.