Thursday, April 06, 2006
Where Do I Order?
Eyes lose their flexibility with age, sometimes making it difficult to shift focus from near to far or vice versa. To combat the problem, Benjamin Franklin devised bifocals--eyeglass lenses shaped for near viewing in the lower half and distance vision in the upper portion--more than 200 years ago. Now researchers have created liquid crystal lenses that can change between long-distance and reading modes with the flick of a switchAm I showing my age?
Related Tags: liquid crystal bifocals, joke, humor
