Recent content by Choi Si Youn

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    How can we inpretate for falling many sphere?

    Hi, in this thread I want to discuss some problem that I wonder. I'm interested in "Probablilty" The first wondering is How can I express that probability follow an exponential. I'm wonder why probability expess in exponential? and Can I show it, if I experiment something, that graph...
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    Question for the use of Woolaston Prism in OPTICAL TWEEZER

    http://www.stanford.edu/group/blocklab/Optical%20Tweezers%20Introduction.htm that page's Figure 3. I just setup for seeing the trapped particle. So now I need more optical elements for my experiment. I just saw that diagram, and just setup, just one part of it. Now I studied how can I...
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    Question for the use of Woolaston Prism in OPTICAL TWEEZER

    In many optics book, they explain a half wave plate to the things that make laser beam linear polarization. is it different your explain and book? http://en.wikipedia.org/wiki/Wollaston_prism I read the webpage that explain the Wollaston Prism. anyway, I'm thank you for your answer...
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    Question for the use of Woolaston Prism in OPTICAL TWEEZER

    I studied optical tweezer, So I saw the optical path in the diagram. Then I can't understand why they use the Wollaston Prism? After launch the laser, the beam through the half-wave plate So the beam polarized, I know this. and after through the half-wave plate, the beam through...
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    Difference between 1D lattice and 2D lattice on BEC

    Oh...'1D','2D' means "Optical lattice's dimension"//// and I found a difference what I wonder, Difference between 1D optical lattice and 2D optical lattice. 1D optical lattice is made by a pair of laser beams , and it makes interference of single standard wave. and 2D optical lattice's shape...
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    Difference between 1D lattice and 2D lattice on BEC

    I studied in AMO physics. nowaday, I study about BEC. I'm wonder, Difference between 1D lattice and 2D lattice on BEC. In the web, they just explain what they do using that. Maybe just short word, or sentence, give me a huge knowledge. Thanks you, and Have a nice day!
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    How does they check the number of atoms in BEC?

    In wikipedia, I read about BEC. so I just wonder in that articles, so I write in this page. Adopt that article, " They did this by cooling a dilute vapor consisting of approximately two thousand rubidium-87 atoms to below 170nK using a combination of laser cooling and magnetic evaporative...
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