Description: A scientist brings home a high-tech lens to amuse his children. The children can see scenes from the past through the lens. A man brings home a distorting lens and places it on the window. One by one his children begin to see visions of the past through it. Claiming it to be impossible, he finally sees it himself and orders the people within to leave them alone. The lens promptly melts. (optic device to see the past)