An Introduction to Induction
All cooks have been there: you're following a recipe and accidentally mix the ingredients too soon. What if you could turn back the clock and pick the mixture apart bit by bit? Impossible, right? Think again! Experiment with the process of induction and the principle that "opposites attract" by separating salt from pepper using nothing more than a plastic spoon.
This experiment depends on building an electrical flow by rubbing plastic against wool. As the negatively charged plastic spoon is lowered, it charges the salt and pepper through a process called induction. The nearest surface of the salt and pepper gains a positive charge and the far side a negative charge. As the spoon is slowly lowered, the grains of pepper will jump toward the spoon first. You need to see it to believe it!
What You Need:
- 1 teaspoon table salt
- 1 teaspoon ground black pepper
- Plastic spoon
- Wool sock (your hair will do if there’s no sock handy)
- Piece of paper (optional)