Currents may also be generated by density differences in water masses caused by temperature and salinity variations. These currents move water masses through the deep oceanâtaking nutrients, oxygen, and heat with them. Occasional events also trigger serious currents. Huge storms move water masses.
Ray-ban and most other manufacturers frames are made from Plastic compounds. Ray-ban used to make all its glasses out of 'glass'. Now it makes its sunglass products out of scratch resistent plastics. Often they will 'feel' like glass but are in fact most usually plastic production.
Ray-Ban is continually adapting to the world around it, and its RX sun glasses styles exemplify this characteristic. These prescription sunnies are the epitome of classic, bold style and high quality. Ray-Ban first achieved notoriety with the introduction of the sleek and distinctive aviator sunglasses in the 1930s.