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    conniemorgann's Avatar
    conniemorgann Posts: 1, Reputation: 1
    New Member
     
    #1

    Jan 7, 2013, 11:50 AM
    How many therefore actually 'saw' the explosion of SN1987a
    Eleven neutrinos were detected by the Kamioka water Cerenkov detector in Japan, following the explosion of supernova SN1987a. The Kamioka detector had a fiducial mass of 1000 metric tonnes. How many human beings, therefore, actually 'saw' the explosion of SN1987a

    Hint - consider the structure of the human eye.
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
     
    #2

    Jan 7, 2013, 11:53 AM
    What do YOU think ?
    While we're happy to HELP we won't do all the work for you.
    Show us what you have done and where you are having problems..

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