THE THEORY OF FLOW LIQUID IN TANK THROUGH HOLES – The volume of fluid discharge from two holes is presented.

THE THEORY OF FLOW – The velocity of flow liquid in pipe for two points A and B is proposed.

THE THEORY OF BALANCE – The theory of mass and measures the density of fluids is presented.

THE THEORIES OF FLOW LIQUID IN PIPE – This paper presents formulas to calculate of velocity of flow liquid in pipe with using condensation and rarefaction of air condition is proposed.

THE THEORY OF CONDENSATION AND RAREFACTION OF AIR – The condensation and rarefaction of gas in J-tube apparatus is proposed.

THE THEORY OF TORSION AND UNSCREWING MATERIAL – In paper the formula of torsion and unscrewing material (spring steel strip) is presented.

THE FLOW STABILIZER – The device that delivers a constant rate of flow is presented.

THE THEORY OF FLOW IN PIPE AS ANALOGY IN FILTRATION PROCESS – The velocity of flow liquid in pipe and velocity of flow liquid in porous medium (e.g. soil) is presented.

THE THEORY OF VOLTO-OHM – The Volto-Ohm formula is proposed. Marek Wojtasik constructed digital meter to make measurements the physical quantity as Volts, Amps, Ohms and Volto-Ohms. 

THE THEORY OF MASS AND DISTANCE BETWEEN TWO BODIES – The formula to calculate the mass and the distance between two bodies is proposed.

THE REFERENCE VELOCITY OF FLOW WATER IN SOIL THEORY – The equation for calculating water flow in soil with using H. Darcy data is presented.

TWO BALANCES – In article the formula to compare of two balances in equilibrium is presented.

DENSITY OF BODY – Density of body formula is proposed.  

ROTATIONAL MOTION AROUND AN AXIS –  An interaction between two rotors is presented.