Mechanical wave is a wave propagation requires a medium in which the energies for the propagation of a wave. The voice is one example of a mechanical wave that propagates through a change in air pressure in the chamber (tight-renggangnya air molecules). Without air, sound can not be propagated. Waves can be seen on the beach, which is a mechanical wave requires water as a medium. Another example of such a wave on a string or a (Slinky).
Understanding of wave mechanical wave concept widely applied in everyday life. Sound waves, light waves, radio waves, and waves of water are some examples of the waveform. When we look at the phenomenon of ocean waves, it turns out, water waves can not move forward, but circular. Is defined as the vibration waves that propagate through the medium / intermediate. Medium wave may be either solid, liquid, and gas, such as rope, slinki, water, and air. In propagation, the waves carry energy. Energy waves are felt when we stood on the beach, in the form of impulse waves at our feet. Waves move across great distances, but the medium (liquid, solid, or gas) can only move is limited.
Thus, although not a matter wave, the wave pattern can propagate in the material. Periodic wave is a wave motion on a regular basis and repeatedly having a continuous source of disturbances and oscillatory, a vibration or oscillation. Water waves can be produced by any object placed vibrators on the surface, like a hand, or the water itself is made vibrate when the wind blows through it, and it could be because of a stone thrown into it.

GELOMBANG MEKANIK 

(mechanical wave)

            Motion a wave of Brazilians symptoms caused by a local disturbance in certain physical quantities as well as the propagation of disturbances in the surrounding medium. The disorder may be the position of particle oscillations, oscillations in the pressure or the mass density of the medium in question, and the oscillating electric field / magnetic aosilasi derived from current or electrical charge oscillations meeting. Except for electromagnetic waves, propagation of local disturbances that always takes place in a material medium. Waves that occur can be one-dimensional (eg rope waves), two-dimensional (eg water surface waves and thin film) or three-dimensional nature of electromagnetic waves, ocean waves and earthquake waves.