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Widow of Nobel physics laureate Charles Kao Kuen tells of his battle with Alzheimer’s disease ahead of Hong Kong exhibition celebrating his life

It is almost a year since Charles Kao Kuen, affectionately known as the “father of fibre optics”, died after battling Alzheimer’s disease for more than a decade. His widow and long-time carer, Gwen Kao Wong May-wan, has carved out a new life for