Simple Experiment Confirming the Negative Temperature Dependence of   Gravity Force
  Results of weighing of the tight vessel containing a thermo-isolated copper sample heated by a tungstic spiral are submitted. The increase of temperature of a sample with masse of 28 g for about causes a reduction of its apparent weight for 0.7 mg. The basic sources of measurement errors are briefly considered, the expediency of researches of temperature dependence of gravity is recognized. 
Alexander L. Dmitriev
physics.gen-ph