ARBOR SCIENTIFIC P6-7350 Bernoulli Bags 4 Pack Instruction Manual
- June 11, 2024
- ARBOR SCIENTIFIC
Table of Contents
ARBOR SCIENTIFIC P6-7350 Bernoulli Bags 4 Pack
Introduction
The Bernoulli Bags 4 Pack is a set of four bags that demonstrate the
Bernoulli principle. The Bernoulli principle states that as the speed of a
fluid (such as air) increases, its pressure decreases. These bags are designed
to illustrate this principle and are great for educational purposes.
Theory
The Bernoulli principle is named after the Swiss mathematician Daniel
Bernoulli. It is a fundamental concept in fluid dynamics and is used to
explain many phenomena, including lift in airplane wings and the operation of
carburetors in engines. The principle states that as the speed of a fluid
(such as air) increases, its pressure decreases. This can be seen in the
Bernoulli Bags, as the air flows through the bags, causing them to inflate and
deflate.
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Product Usage Instructions
- Remove the Bernoulli Bags from their packaging.
- Hold one of the bags by its neck and blow into it to inflate it.
- Release the neck of the bag and watch it deflate.
- Repeat with the other bags, observing how they inflate and deflate.
- To demonstrate the Bernoulli principle, hold one of the bags vertically and blow across the top of it. The bag should move towards you, demonstrating the decrease in pressure caused by the increase in speed of the air.
- Experiment with different angles and speeds of airflow to observe how the Bernoulli Bags react.
Introduction
The Bernoulli Bag is an eight-foot-long, ten-inch-wide plastic bag that is inflated by blowing air into it. After unrolling the bag, tie off one end. Begin by having a student try to blow up the bag in the normal way through a small opening. Crunching down the open end to make a small opening and placing the mouth against the bag, see how many breaths of air it takes to inflate the tube. This should require many breaths to partially fill the bag. Now, fully open the end of the bag and with your mouth several inches from the opening give one long blow into the bag. This should result in nearly filling the bag. Most of the air that enters the bag comes from the surrounding air that mixes with the air from your mouth.
Theory
The movement of air results from a difference in air pressure. A law of physics known as the Bernoulli principle explains that pressure within a fast- moving volume of air deceases with the speed of the air. This principle is used to explain many phenomena in nature such as how musical instruments produce sound and how baseball pitchers are able to throw a curve ball. The Bernoulli Bag works on this principle when a fast-moving stream of air is blown into one end of the tube. When blowing into the tube, air from the surrounding room rushes into the fast- moving low-pressure stream increasing the volume of air entering the tube. As a result, one strong blow into the bag picks up enough surrounding air to fill the bag.
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PO Box 2750 | Ann Arbor, MI 48106 | T: 800-367-6695 | www.arborsci.com ©2019 Arbor Scientific All Rights Reserved
References
- Physics and Chemistry Science Lab Equipment – Arbor Scientific
- Physics and Chemistry Science Lab Equipment – Arbor Scientific
- Airzooka Air Cannon – Arbor Scientific
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