Home » Interesting Questions » Air Pressure – An experiment with syringe

Archives

Air Pressure – An experiment with syringe

If I take a medical syringe, position the plunger in the middle of the length of the tube and seal off the tip, I will encounter substantial resistance when I try to move the plunger.
But, if I take the syringe into outer space – no atmosphere – and do the SAME procedure will I notice NO resistance when moving the plunger?  Since there is no air to compress or decompress I suspect there will be no resistance.  Is this correct?

Asked George Creegan

Answer

Yes, the only thing keeping you from pulling the plunger on a syringe with a sealed end is the surrounding air pressure.    If there is perfect vacuum inside and outside the syringe!

 

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: