How To Make A Vacuum With A Straw : What is a "vacuum", and how can I make one with a straw?

Name: How To Make A Vacuum With A Straw : What is a "vacuum", and how can I make one with a straw?
Uploaded: 2011-01-07T19:57:05+00:00
Duration: 54 s
Channel: VideojugFamilyEducation
Description: Watch How To Make A Vacuum With A Straw : What is a "vacuum", and how can I make one with a straw? - VideojugFamilyEducation on Dailymotion