Examples of media in the following topics:
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- The speed of sound is dependent on the properties of the media the sound is travelling through.
- Compression waves can travel through any media, but shear waves can only travel through solids.
- The speed of a compression wave is determined by the media's compression capacity, shear modulus, and density, while the speed of the shear wave is only determined by the shear modulus and density.
- This is called the Newton-Laplace equation:$c=\sqrt{\frac{K}{\rho}}$K is the coefficient of stiffness, and p is the density of the media.
- Calculate the speed of sound from the properties of the media
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- Sound is a longitudinal wave of pressure that travels through compressible medias, which can be solid, liquid, gaseous, or made of plasma.
- Sound is a wave—a longitudinal wave of pressure that travels through compressible medias (i.e., solid, liquid, gaseous, or made of plasma).
- Thus there in a vacuum, there is no media through which sound waves can travel.
- As mentioned previously, the speed at which sound travels depends on the media through which the sound is traveling.
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- Optical discs are digital storing media read in an optical disc drive using laser beam.
- Optical discs are digital storing media.
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- There are many types of lasers depending on the gain media and mode of operation .
- Gas and semiconductors are commonly used gain media.
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- The physical mechanism for this can be qualitatively understood from the manner in which electric dipoles in the media respond to p-polarized light (whose electric field is polarized in the same plane as the incident ray and the surface normal).
- One can imagine that light incident on the surface is absorbed, and then re-radiated by oscillating electric dipoles at the interface between the two media.
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- Transverse waves propagate through media with a speed $\vec{v}_w$ orthogonally to the direction of energy transfer.
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- Refraction is described by Snell's law, which states that for a given pair of media and a wave with a single frequency, the ratio of the sines of the angle of incidence θ1 and angle of refraction θ2 is equivalent to the ratio of phase velocities (v1/v2) in the two media, or equivalently, to the opposite ratio of the indices of refraction (n2/n1):
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- An incident beam of light encounters four boundaries at which the index of refraction of the media changes, causing four reflected beams (or Fresnel reflections) as shown in .
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- A sound wave contains pulses, which are the products of compressing the air (or other media) particles.
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- Here, n1 and n2 are refractive indices of the media, and $\theta_1$ and $\theta_2$are angles of incidence and refraction, respectively.
- Refraction of light at the interface between two media, including total internal reflection.