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| Revival | Answered more than 30 days later as first answer scoring 2 or more. This badge can be awarded multiple times. |
anna v earned this badge 5 times |
jan 10 at 10:26
Identification of extended quantum objects?
dec 23 at 9:49
When does a pot not spill?
oct 31 at 4:53
Are there cosmic rays in a nuclear reaction?
may 2 '12 at 12:19
What is meant by the rest energy of non-composite particle?
mar 23 '12 at 15:28
Is there any idea why the electric charges of electron and muon are equal?
