An optical fiber consists of a material that internal disappearance, called nucleus, having an index of refraction 1.82 and from an outermost layer with refractive index 1.24. How much does the angle measure limit? It also calculates the minimum time needed to get an answer when you click on the site of the New York Times, considering that he is coming used the optical fiber mentioned above for the whole 7.00 · 103 km journey from here to New York-