Physics Teacher Demonstrates Bernoulli's Principle with a Bag
A science teacher demonstrates a classic physics experiment using a long, thin plastic bag to illustrate the Bernoulli principle. By holding the bag slightly away from his mouth and blowing into it, he creates a low-pressure area that draws surrounding air into the bag along with his breath, allowing him to inflate the entire length of the bag in a single attempt. He contrasts this with the inefficient 'standard' method of blowing directly into the bag, which requires significantly more effort. This engaging classroom demonstration serves as a practical example of fluid dynamics in action.
now that's one way to hook kids to learn STEM
Okay , but when do we get to "How to make 99.99% meth" part. .?
My ex could blow like that
oh, my....
Dr Shalom Cohen
Only works if there is no resistance (or equal pressure) on the other side. If he didn't ruffle up that bag first and it was a typical pressed bag, the resistance of the two sides stuck together would prevent this.
The bernoulli effect will only work if air is also sucked into the room from somewhere. If not, it will cause an under pressure which may even negate the airflow generated by the ventilator itself.
'stay tuned to the end' - number one way of telling me to do something else - anything else.
Now show how to inflate birthday type large baloon
The boys in class immediately when given a balloon like this: