WAVES You cant stop the waves but you
WAVES You can’t stop the waves but you can learn to surf…
WAVES a wave is disturbance that travels through matter or space, accompanied by a transfer of energy. The repeating and periodic disturbance that travels through a medium (e. g. water) from one location to another location.
Wave crest -the highest part of a wave. Wave trough –the lowest part of a wave. Wave height -the vertical distance between the highest (crest) and lowest (trough) parts of a wave. Wavelength -the distance from a certain point on one wave to the same point on the next wave (e. g. distance between two consecutive wave crests or between two consecutive wave troughs). Wave amplitude - one half the distance from the crest to the trough.
Two main types of Waves: • Mechanical Waves propagate through a medium, and the substance of this medium is deformed • Electromagnetic Waves do not require a medium. Instead, they consist of periodic oscillations of electrical and magnetic fields generated by charged particles, and can therefore travel through a vacuum. These types of waves vary in wavelength, and include radio waves, microwaves, infrared radiation, visible light, ulraviolet rays, X-rays, and gamma rays.
Sinusoidal waves Any oscillation, such as a sound wave or alternating current, whose waveform is that of a sine curve.
Polarization Move back and forth in one direction or plane.
Dispersion The separation of colors from white light as it passes through a prism.
He performed experiments with light and prisms, presenting his findings in the Optics (1704) that white light consists of several colours and that these colours cannot be decomposed any further. Sir Isaac Newton
Electromagnetic waves Travels in a direction that is at right angles to the oscillation direction of both fields(electic and magnetic fields).
He formulate the classical theory of Electromagnetic waves, bringing together for the first time electricity, magnetism and light as manifestations of the same phenomenon. James Clerk Maxwell
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