On the picture is a circle, created in a uniform layer of fine flour by electric spark, impacting vertically to the surface on which the layer is spread (a layer of granular material, the weight of particles tens to hundreds of millionths of a gram, the density around 720g/liter - approximately matches the plant material, thickness of just over a millimeter).
Kwenye picha ni mduara, tuliumbwa katika safu sare ya unga mwembamba na cheche za umeme, athari vertikalt kwa uso juu ya safu ambayo ni kuenea (safu ya nyenzo punjepunje, uzito wa chembe makumi kwa mamia ya millionths ya gram, wiani kuzunguka 720g/liter - Takriban Matches nyenzo kupanda, unene wa zaidi ya milimita).