None of these new petroleum products are true distillates, they are extracts and creations of the petroleum engineers gluing bits and pieces of hydrocarbon molecules from the refinery waste stream together to make useful, salable products.
The Causes of Double Vision. Double vision, or diplopia, occurs when your eyes donât work as a team. When your visual system is working correctly, both eyes should point in the same direction at an object. Your eyes see two different images, which your brain combines to produce a single, 3D image.
The reason why your eyes feel heavy and tired may caused by lacking of sleep. When you don't have enough sleep, your eyes muscles are stay excited as well, so our eyes will feel tired and heavy. If you want to improve this situation, what you do first is to have enough sleep.Moreover, you can use a cold washcloth to give your eyes compresses.hen you don't have enough sleep, your eyes muscles are stay excited as well, so our eyes will feel tired and heavy. If you want to improve this situation, what you do first is to have enough sleep. Moreover, you can use a cold washcloth to give your eyes compresses.