Science Experiment - The first elementary newscast in Texas shows you why Science is Cool by showing you an experiment dealing with secret ironed... » More

Science Experiment - The first elementary newscast in Texas shows you why Science is Cool by showing you an experiment dealing with secret ironed ink inside US currency. Different amounts of iron is included in different currency bills. This experiments shows you just how much iron is inside a dollar. Do vending machines look for the bill's image or the amount of iron?? Find out.

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