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# Identify the Characteristics of Electromagnetic & Mechanical

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## Sophia Gortner

on 4 April 2014

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#### Transcript of Identify the Characteristics of Electromagnetic & Mechanical

Transverse waves
Mechanical waves
and internal reflection diagrams
Reflection Diagram
Bi-convex
Diagrams of the parts of both a transverse and a longitudinal waves
For transverse waves the displacement of the medium is horizontal to the direction of multiplication of the wave. A ripple on a pond and the wave of a string are examples transverse waves.
Electromagnetic waves
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Monday, March 24, 2014
Vol XCIII, No. 311
The 2 main categories of waves
Identify the Characteristics of Electromagnetic & Mechanical Waves
Longitudinal waves
Diagrams of the parts of both a transverse and a longitudinal waves
Electromagnetic waves consist of oscillating electrical and magnetic fields, acting perpendicular to each other. Although it is difficult to visualize this scenario, the waveform does have similar characteristics to other types of waves. A mechanical wave is referred to as a disturbance that travels through a certain material or substance. This material or substance is known as the medium of the wave.
In longitudinal waves the displacement of the medium is parallel to the propagation of the wave. A wave in a "slinky" is a good visualization. Sound waves in air are longitudinal waves.
Waves
The differences between the types of waves
While an electromagnetic wave is called just a disturbance, a mechanical wave is considered as a periodic disturbance.
Electromagnetic waves travel like a vacuum but mechanical waves don't. The ripples made in a pool of water after a stone is thrown in the middle are an example of mechanical wave, but the examples of electromagnetic waves include light and radio signals. Mechanical waves are caused by wave amplitude and not by frequency. Electromagnetic Waves are produced by vibration of the charged particles.
and biconcave diagrams
Refraction
Refraction, in physics, the change in direction of a wave passing from one medium to another caused by its change in speed.
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Definitions of
Definitions
A hertz is a unit used for measuring the frequency of sound waves
Frequency the rate of time of a vibration constituting a wave, either in sound waves, or in an electromagnetic waves
Amplitude is the maximum distance moved by a point on a vibrating body or wave measured from its equilibrium position.
Wavelength is the distance between the crests of a wave, found in in a sound wave or electromagnetic wave.
A decrease in density and pressure in a medium, such as air, caused by the passage of a sound wave. It's the opposite of a sound wave.
Compression is the decrease in volume of any object or substance resulting from applied stress
wavelength, amplitude frequency
compression, rarefaction and hertz
When a ray of light strikes a reflective surface. Reflection is the change of direction of the light ray. The direction of a light ray is to indicate the angle which the light ray makes with a normal line drawn to the surface of the mirror. The angle of incidence is the angle between this normal line and the incident ray; the angle of reflection is the angle between this normal line and the reflected ray.
If the lens is biconcave, a collimated beam of light traveling parallel to the lens axis and passing through the lens will be converged.
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