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Internal Reflection
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

ID:(1261, 0)


Reflection of Light Objects
Definition

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)


A Mirror
Image

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)


Two Mirrors in an Angle
Note

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

ID:(9781, 0)


Internal Reflection
Description

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.

Variables
Symbol
Text
Variable
Value
Units
Calculate
MKS Value
MKS Units
$\theta_i$
theta_i
Angle of Incidence
rad
$\theta_r$
theta_r
Angle of Reflection
rad
$d$
d
Distancia al espejo
m
$h$
h
Distancia que haz avanza paralelo al espejo
m
$x$
x
Punto de reflexión en el espejo
m

Calculations

First, select the equation:   to ,  then, select the variable:   to 
Symbol
Equation
Solved
Translated

Calculations

Symbol
Equation
Solved
Translated

 Variable   Given   Calculate   Target :   Equation   To be used


Equations

Examples

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)

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

$ \theta_i = \theta_r $

(ID 3262)

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)

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 $

(ID 9778)

El angulo de incidencia \theta_i, y con ello el de reflexi n \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 }$

(ID 9779)

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

(ID 9781)

ID:(1261, 0)