gre Posted April 11, 2009 Posted April 11, 2009 What is the smallest object ever observed with gravity? Also, how is it determined/known that subatomic particles (ie free electrons) have gravity?
ajb Posted April 11, 2009 Posted April 11, 2009 Gravity in the sub-millimetre scales has not been fully explored, let alone anything on the sub-atomic scale. There are experiments exploring gravity on the mm scale. Maybe someone else here can enlighten us. If not try a google search.
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