How Do You Make A Cartesian Diver With A Ketchup Packet?
• Get three or more unopened condiment packets. Small ketchup or mayo packets such as those you get at fast food restaurants are perfect. Make sure they are full and have no tears or holes. • Choose the packet whose tip is barely above the water (in this case, the brown one). Choose a packet. Drop all the condiment packets into a pint glass of water. They will generally all float at somewhat different levels, and one or more may sink. Choose a packet that floats with its tip just barely above the water. • Drop the chosen packet into a nearly full bottle of water (made from plastic, not glass!). You may need to bend the packet a bit to get it through the neck of the bottle. Be careful not to break the packet open when doing so. • Fill the bottle completely with water. Add more water to the bottle until it is completely full. It is essential that the bottle be full. • Screw on the bottle cap as tightly as possible. • It dives when you squeeze the sides of the bottle. Squeeze the sides of
