Card 77 of 82
A Fire in France
In France in 1959, a woman is waiting in her room for her husband to come home, with all the doors locked from the inside. When he arrives, the house has burned to the ground and she is dead. How come?
Solution: The hot sun reflected off the woman's large mirror, which may not have been perfectly flat and so focused the sunlight, and heated the lingerie she was wearing to burning point. She was absorbed in a book and didn't notice the heat until her clothing was on fire. Nobody could get in to help her because the doors were locked from the inside.