Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. In this 40x40x100 tank a wavelength of +-1 Hrz wil be generated. It's own frequency. 40cm x 40cm x 1m in group Waterharpet, dated 2005, price on request Three-dimensional / Sculpture / Metal Abstraction / Nature Figurative / Surrealistic