Problem: TheshotsOS5,OS9andOS10weredetonatedat18April.AndOS3,OS4,etc.weredetonated21April.Correspondinglythewhitelineshowsthepositionsofreceiversat18Aprilandtheredlinethepositionsoftheinstruments21April.
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The shots OS5, OS9 and OS10 were detonated at 18 April. And OS3, OS4, etc. were detonated 21 April. Correspondingly the white line shows the positions of receivers at 18 April and the red line the positions of the instruments 21 April.

Problem: Thatheedontheirvelocity,
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That heed on their velocity,

Problem: 23.September2011MieKirstine
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23. September 2011 Mie Kirstine

Problem: Sinceforsmall,sin()thefirstminimaforthedistributionofthediffractionangleareat=(/a).
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Since for small , sin() the first minima for the distribution of the diffraction angle are at =(/a).