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The Spinning Penny & The Screaming Balloon

The Spinning Penny

Warning: The spinning penny trick is known to be addicting. Once you start, it’s almost impossible to stop. Centripetal force may get the best of you. Proceed with caution! It’s an amazing display of centripetal force. Once you get started, it’s almost habit forming. Left untreated, you’ll be spinning everything in sight!

Squeeze a penny through the mouth of one of our clear balloons. Make sure that the penny goes all the way into the balloon so that there is no danger of it being sucked out while blowing up the balloon. Blow up the balloon. When properly inflated, the balloon will be almost clear in the middle and cloudy at area near the neck and at the end opposite the neck. The cloudiness at the ends is unstretched latex, which provides stress relief. If the balloon is completely clear, all over, it is over inflated. Tie off the balloon and you’re ready to go. Grip the balloon at the stem end as you would a bowling ball. The neck of the balloon will be in your palm and your fingers and thumb will extend down the sides of the balloon. While holding the balloon, palm down, swirl it in a circular motion. The penny may bounce around at first, but it will soon begin to roll around the inside of the balloon. The best orbit or path for the coin is one parallel to the floor. Once the coin begins spinning, use your other hand to stabilize the balloon. Your penny should continue to spin for 30 seconds or more.

The Screaming Balloon

What would Halloween be without spooky sounds? Here's an easy-to-do experiment using only a balloon and a hex nut from the hardware store. Be sure to buy enough supplies for all of your Halloween party guests because everyone is going to want a screaming balloon!

Squeeze the hex nut through the mouth of the balloon. Make sure that the hex nut goes all the way into the balloon so that there is no danger of it being sucked out while blowing up the balloon. Blow up the balloon, but be careful not to over inflate the balloon as it will easily burst. Tie off the balloon and you’re ready to go. Grip the balloon at the stem end as you would a bowling ball. The neck of the balloon will be in your palm and your fingers and thumb will extend down the sides of the balloon. While holding the balloon, palm down, swirl it in a circular motion. The hex nut may bounce around at first, but it will soon begin to roll around the inside of the balloon. What is that sound? Could the balloon be screaming? Once the hex nut begins to spin, use your other hand to stabilize the balloon. Your hex nut should continue to spin for 10 seconds or more.

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