Mr. Wizard's World

Liquid Nitrogen, Sweater, Robot Sensor, Firefighter's School, Singing Glasses, Potato Float and more (2x12)

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Liquid Nitrogen, Sweater Reversing, What is This, Robot Sensor, Firefighter's School, Singing Glasses, Potato Float. Christian dips a carnation into a bowl of liquid nitrogen, pulls it out, and hits it against the table. The flower shatters into many tiny pieces as if it were made of glass.