For light rays travelling from a cloth with a superior index of refraction to a material with a lower index of refraction, Snell's regulation predicts that there is no θ2 when θ1 is significant. In this case, no transmission happens; each of the light is reflected. Text messaging (texting) – https://zanevvqmf.estate-blog.com/29381226/not-known-facts-about-bluetooth-speaker