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 Wayfarer sunglasses have been manufactured by Ray-Ban since 1956, when their design was a revolutionary break from the metal eyewear of the past.hough the sunglasses had faded from the limelight by the 1970s, a lucrative 1982 product placement deal brought Wayfarers to their height of popularity. Since the mid-2000s, the sunglasses have been enjoying a revival.