manufacturing the first CR-39 eyeglass lenses in 1947. CR-39 plastic has an index of refraction of 1.498 and an Abbe number of 58. CR-39 is now a trade-marked...
9 KB (962 words) - 16:12, 26 August 2024
Corrective lens (section CR-39)
Thinner, sometimes lighter lenses (See below). Improved UV protection over CR-39 and glass lenses. Lower Abbe number, meaning, amongst other things, increased...
52 KB (6,362 words) - 08:23, 15 August 2024
interchanges with CR 38 (North Sea Road) and CR 39 (County Road), CR 79 (Bridgehampton–Sag Harbor Road), NY 114 (East Hampton–Sag Harbor Turnpike), CR 40 (Three...
52 KB (4,111 words) - 20:57, 30 August 2024
the road enters areas of heavy industry and comes to the County Route 602 (CR 602) exit in Carteret. In Union County, I-95 comes to the I-278 exit on the...
58 KB (4,023 words) - 21:15, 24 August 2024
Brazilian Portuguese). Retrieved March 14, 2019. "Rio de la Plata trip of CR Flamengo (Rio de Janeiro) 1933". Rec.Sport.Soccer Statistics Foundation. Retrieved...
187 KB (12,450 words) - 18:38, 31 August 2024
List of county routes in Bergen County, New Jersey (redirect from County Route 39 (Bergen County, New Jersey))
following 500-series county routes serve Bergen County: CR 501, CR 502, CR 503, CR 504, CR 505, CR 507 Bergen County has one of the longest-lasting county...
61 KB (376 words) - 13:25, 25 August 2024
Polaroid filter. In 1947, the Armorlite Company began producing lenses with CR-39 resin. At present, Xiamen, China is the world's largest producer of sunglasses...
76 KB (8,924 words) - 14:55, 19 August 2024
The Honda CR-Z is a sport compact hybrid electric car manufactured by Honda and marketed as a "sport hybrid coupe." The CR-Z combines a hybrid gasoline-electric...
42 KB (4,554 words) - 23:23, 31 August 2024
used to produce the lenses: Although relatively durable inside of frames, CR-39 lacks impact resistance and cannot absorb the wear and tear of constant...
12 KB (1,548 words) - 14:47, 19 July 2024
Road 39A" for the street name, it commonly known as part of CR 39. The entire route is signed as CR 39. Major intersections County Route 39B is Canal Road East...
71 KB (6,007 words) - 16:06, 25 July 2024