This Alpha Scattering Apparatus is for demonstrating Rutherford scattering by means of a gravitational analogue of inverse square law repulsion.The apparatus comprises a spun aluminium hill a 12.5mm steel ball and a wooden launching ramp. The shape has been determined by varying its height above the base line by an amount based upon the reciprocal of the radius.The launching ramp has a guide groove down its curved front face and index marks at 40mm 60mm 80mm and 100mm above the base to give a variety of known launching heights.Aluminium Hill Dimensions: (D)280mm x (H)60mmLaunching Ramp Dimensions: (L)300mm x (W)48mm x (H)105mm