...Leukipos and Dimocritos support the concept that the the elements are the 'full' and the 'void', calling these being (ΩΝ)  and non-being (ΜΗ-ΩΝ), respectively....They believed that the origin elements of existence are accountable and indivisible (cannot be cut, A-TOMA), as these are compact and innert as they contain no void within... Indivisable atoms can have different weight according to their size...Complex bodies can be heavier or lighter according to the percentage of void they contain...Atoms move with reciprocal collisions and form complexes with eachother...the symetry and the shapes of  structures formed gives genesis to the different bodies...The sort of movement is oscillatory...

Dimokritos (Democritus) was born in 460BC in Avdira of Thrace