Table A1.

Physical parameters.

Symbol	Value	Description
${\rho }_{\mathrm{p}}$	1020 Kg/m${}^3$	Density of a marker
${\rho }_{\mathrm{f}}$	980 Kg/m${}^3$	Density of the material
$V_{\mathrm{p}}$	0.0654 mm${}^3$	Volume of a marker
g	9.81 m/s${}^2$	Gravitational acceleration
$\eta$	9.3 Pa·s	Dynamic viscosity of the material
$R_{\mathrm{p}}$	0.25 mm	Radius of a marker