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6.2.4: Interpretación

  • Page ID
    51148
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    Vamos a integrar la última ecuación (6.2.3.1)

    \[
    \mathcal{L}\left(\mathbf{r}_{2}\right)-\mathcal{L}\left(\mathbf{r}_{1}\right)=\int_{\mathbf{r}_{1}}^{\mathbf{r}_{2}} n d s \notag
    \]

    En el lado izquierdo tenemos una función proporcional a la diferencia de fases de la onda. En el lado derecho tenemos lo que en el contexto de la OG se llama camino óptico. Lo que dice la ecuación es que en este nivel de aproximación diferencia de fase equivale a camino óptico. De modo que para calcular cambios de fase no hay más que calcular el camino óptico recorrido por el rayo. Otra forma de verlo es recordar que el camino óptico sirve para definir los frentes de onda en OG (como superficies de igual camino óptico). Ahora podemos tranquilamente, dentro de la aproximación que hemos tomado, identificar los frentes de onda electromagnéticos con los frentes de onda geométricos.


    6.2.4: Interpretación is shared under a CC BY-SA 1.0 license and was authored, remixed, and/or curated by LibreTexts.