Second, even without glare they selectively reduce other reflections from objects above water, including clouds and even the sky (the reflected sky gives most of its blue color to the sea). Finally, light coming from under water is slightly polarized in the vertical plane (polarized on transmission).
1 Alzheimer's is the sixth leading cause of death in the United States. 2  Those with Alzheimer's live an average of eight years after their symptoms become noticeable to others, but survival can range from four to 20 years, depending on age and other health conditions.
After a diagnosis of Alzheimerâs disease, a person lives from three to 20 years. Many factors influence how long he will live. Knowing the life expectancy of someone with Alzhemer's is valuable information for helping him and his family. Quality of life is key.