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| Franklin's bifocals |
This Independence Day, Dr. Scott Morris remembers Benjamin Franklin in his CommercialAppeal column:
Franklin was an inventor unafraid to experiment. Remember the kite tied to a key in a lightning storm? He could have killed himself. That's how much he wanted to know what would happen. If you wear bifocal glasses, you can thank Ben Franklin. When he was 78 years old and struggling with his own vision, he took two pairs of spectacles, split them in half, and made one pair with two strengths of lens. He also invented a catheter to help his brother with bladder stones, and he experimented with a variety of medical uses of electricity. Read more.
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