Recent content by ah lai

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    Engineering How to improve sensivity of detection circuit(Photodiode)?

    How to improve sensivity of detection circuit(Photodiode)??
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    How using shorter-wavelength laser allows more information to be stored

    Information is stored in a series of pits on the disc. These pits are scanned by a laser beam. An significant limitation on amount of information that can be stored on a disc is width of laser beam. I knew why the width of laser beam is important coz diffraction effect of loght. How...
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    Maximizing Disc Storage: The Impact of Laser Beam Width on Information Capacity

    Information is stored in a series of pits on the disc. These pits are scanned by a laser beam. An significant limitation on amount of information that can be stored on a disc is width of laser beam. I knew why the width of laser beam is important coz diffraction effect of loght. But, i...
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    DOUBLE slit interference experiment

    No, it's past yr question. I dun understand wat question is ? no idea.. I oledi tried to search information on internet.. still can't get it... when the whole apparatus place on the table, dark & light pattern display on the screen if using light source. do u think the whole apparatus...
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    DOUBLE slit interference experiment

    the double slit interference experiment is set up and the fringes are displayed on screen. Then the whole apparatus is immersed in the nearest swimming pool. How does the fringe pattern change?? Which website I can get information?? Thanks.