​Creating the field of hydrodynamics


​​Biruni contributed to the introduction of the experimental scientific method to mechanics, unified statics and dynamics into the science of mechanics and combined the fields of hydrostatics with dynamics to create hydrodynamics. 

densities and wieght of metals


Biruni made very accurate measurements of specific weights and described the ratios between the densities of gold, mercury, lead, silver, bronze, copper, brass, iron and tin. ​He came up with different for exploring densities, weight, and even gravity.