The refractive index of current eyeglass lens materials ranges from 1.498 (CR-39 plastic) to 1.74 (a specific variety of high-index plastic). So for the same prescription power and lens design, a lens made of CR-39 plastic will be the thickest lens available, and a 1.74 high-index plastic lens will be the thinnest.
Principal photography on the film began on April 25, 2016, in Pittsburgh, Pennsylvania, in the Hill District, and wrapped in mid-June 2016. Fences was released in the United States on December 16, 2016, by Paramount Pictures, received positive reviews and grossed $64 million.
This is the first single off of the Broken Fences self-titled debut album, released June 1, 2012. You can download this song here:http://brokenfences.bandcamp.com/trac... www.BrokenFencesBand.com. Lyrics: Voices captured. Long road ahead. Not looking for a meaning.his is the first single off of the Broken Fences self-titled debut album, released June 1, 2012. You can download this song here: http://brokenfences.bandcamp.com/trac...