Viscous damping has been widely used as the energy dissipation mechanism of choice in abating resonant vibration in structures. Such damping is commonly provided either by forcing a low-viscosity fluid thru small openings (orifices) in ‘turbulent flow viscous dampers’  or shearing a high viscosity fluid between moving surfaces in ‘laminar flow viscous damping units’ (dashpots).  The former type is commonly used in the making of shock absorbers in automobile suspensions. ‘Turbulent flow viscous dampers’ (shock absorber type dampers) are uni-directional with a rather complex mechanical design and require periodic maintenance, but ‘laminar flow viscous damping units’ (dashpots) are multi-directional with a simple mechanical design and are maintenance free. Alternatively, viscous damping can be realized by shearing  viscoelastic polymers in solid viscoelastic dampers as well as moving a conductive solid material through a magnetic field in ‘magnetic dampers’ also known as ‘eddy current dampers’. The kinetic energy of the structure being dampened by viscous dampers of any type is transformed into heat and dissipated .