Chemistry Homework

Was about to log on when life (or chemistry homework at least) took over. I was going to make this B&W, but you wouldn't have seen my daughter's glasses properly.

Without the glasses printed words shimmer and she can read about  words a minute. With the glasses she can read 95+/min. Her teacher told us that she was the first child she ever had with glasses like this that just accepted it and got on with life. Clearly, I'm proud of her and her attitude to life.