From west to east the six standard time zones in Europe are: (UTC/GMT -1) Azores Time Zone. (UTC/GMT +0) Greenwich Mean Time Zone, Western European Time Zone and Irish Time Zone. (UTC/GMT +1) Central European Time Zone.
Mechanical waves transport energy. This energy propagates in the same direction as the wave. Any kind of wave (mechanical or electromagnetic) has a certain energy. Mechanical waves can be produced only in media which possess elasticity and inertia. A mechanical wave requires an initial energy input. Once this initial energy is added, the wave travels through the medium until all its energy is transferred. In contrast, electromagnetic waves require no medium, but can still travel through one.
From Wikipedia, the free encyclopedia. A mechanical wave requires a medium. Sound waves, waves in a Slinky, and pressure waves are all examples of this phenomenon. Sound waves need a physical medium in order to exist; the Slinky waves need the Slinky, and the waves in the ocean need the water.Like all waves, they have a frequency, period, wavelength and amplitude. Mechanical waves are a local oscillation of material.ound waves need a physical medium in order to exist; the Slinky waves need the Slinky, and the waves in the ocean need the water. Like all waves, they have a frequency, period, wavelength and amplitude. Mechanical waves are a local oscillation of material.