MAST200 Lecture Notes - Lecture 11: Wavelet, Significant Wave Height, Frequency
15 Oct 2016
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Document Summary
Ocean waves: the undulating motion of the water surface. Affects shipboard life - both work and play. Impact both land-based structures in storms and shipping when really rough. Heat, dissolved oxygen, carbon dioxide, nutrients, phytoplankton, zooplankton. Energy in motion - requires disturbance that transfers energy from place to place. Electromagnetic (em) waves: energy moves through disturbances in the em field. Mechanical waves: energy is transferred by vibrations of medium (matter) Em waves: light of a visible or invisible wavelength. Oscillating intertwined electric and magnetic fields compromise light. Light can travel without medium, very past, even through space. Mechanical waves: waves are created when a source of energy travels through a material or medium and causes it to vibrate. Materials that can act as a medium: solids, liquids, gases. Medium does not move, but the energy wave moves through it. Mechanical and sound waves cannot travel through space because. They need a source of energy to cause the medium to vibrate.
