Storyboard

When the beam propagates through one medium and reaches an edge with another medium, it can be transmitted to it or reflected within the first. In this last case we talk about an internal reflection.

The angle with which it falls is defined between the normal to the surface between both means and the direction of propagation. Similarly, the reflected one is defined as a function of the normal one and the direction of propagation after reflection.

In general both angles are identical.

>Model

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Concept

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If you think of light as particles (photon) that affects a non-transparent body, it is reflected.

The reflection occurs so that the angle of insidence is equal to the angle of reflection.

On the other hand, the photons do not change in frequency or wavelength, that is, they only suffer a change in the direction of propagation with respect to the plane of impact.

ID:(195, 0)

Equation

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Para la luz reflejada el angulo del haz respecto de la normal \theta_i es igual al angulo de reflexión \theta_r:

$ \theta_i = \theta_r $

Conditions

Variables

$\theta_i$

Angle of Incidence

$rad$

$\theta_r$

Angle of Reflection

$rad$

Relation

ID:(3262, 0)

Image

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A mirror looks like a window to another room. The effect is created by the reflected light that the eye assumes was not reflected but comes from an object behind the mirror.

ID:(9777, 0)

Equation

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For the reflected light the angle of the beam with respect to the normal \theta_i is equal to the angle of reflection \theta_r:

$ x =\displaystyle\frac{1}{2} h $

Conditions

Variables

$h$

Distancia que haz avanza paralelo al espejo

$m$

$x$

Punto de reflexión en el espejo

$m$

Relation

ID:(9778, 0)

Equation

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El angulo de incidencia \theta_i, y con ello el de reflexión \theta_r, se asocia al camino recorrido paralelo al espejo h/2 y la distancia a este d mediante:

$ \tan \theta_i =\displaystyle\frac{ h }{2 d }$

Conditions

Variables

$\theta_i$

Angle of Incidence

$rad$

$d$

Distancia al espejo

$m$

$h$

Distancia que haz avanza paralelo al espejo

$m$

Relation

ID:(9779, 0)

Description

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If two angles are at an angle less than 90 degrees a beam that is reflected in one of these will reach the second.

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