The most famous is American physicist Franklin, who made a kite, tied a string, went out to fly a kite in thunderstorm weather and was almost electrocuted.

Madame Curie studied radioactive substances, and as a result, she died of cancer.

Galileo didn't believe Aristotle's theory of ancient physics. He threw two iron balls at the leaning tower of Pisa and found that they landed at the same time.