Balance (by DrakerDG )
Does air have weight? Of course it is!
This is a balance that I designed to appreciate the weight of air. The experiment was demonstrated by my 5 year old son at his school.
2739 downloads (1779 this month)
February 15, 2011 uploaded
Copyright of every work belongs to its author. Please contact to the author if you want to use the data not for personal use.