DIY Toilet Paper Cannon

• Leaf Blower
• Paint Roller
• Toilet Paper
• Duct Tape/Masking Tape

Step 1:  Gather materials (Make sure you have permission. It’s not fun to run out of toilet paper when you really need it!)

Step 2: Wrap the paint roller handle with several layers of tape toward the top of the handle  to give it a little height when you tape it to the leaf blower.

Step 3: Tape the paint roller tightly to the end of the leaf blower making sure the stream will blow a couple of inches above the toilet paper roll when you load it.

Step 4: Place the TP on the paint roller so that the TP comes out over the top of the roll.

Step 5: Sneak into a room with someone in it and turn on the leaf blower. Surprise!

Bernoulli’s Principle states that the faster the air is moving the lower the pressure. When you turn on the leaf blower,  the fast moving air rushes over the top of the toilet paper. The low pressure above the toilet paper allows for the high pressure below the toilet paper to push the toilet paper up into the moving stream of air. This principle is also the reason an airplane can lift into the sky as the air rushes over its wings.

You just completed the DIY TP Cannon.  To make this a true experiment, try changing a variable?

• What might happen if you placed the toilet paper with the paper coming under the roll. Would it still work?
• Does it change the experiment if we did the same thing with a blow dryer?
• Can you design a mini version of this trick using a blow dryer and something else?
• What other ways can you demonstrate Bernoulli's principle?

There are several different types of pilots:  commercial airline pilots, fighter pilots and recreational pilots to name a few. Pilots needs to understand Bernoulli’s principle, Newton's laws and air circulation in order to understand lift and successfully and smoothly fly an airplane.

Did you know the pulp from 1 Eucalyptus tree can be used to make 1000 rolls of toilet paper?  Americans use an average of 50 pounds of TP per year per person.