murphey
Touchdown! Greaser!
I'm teaching an intro to aviation course - again - to middle school kids this summer (we start in a week). This time I really want to demonstrate atmosphere ideas such as boiling water at room temp. I have the bell jar & stand but need a vacuum pump. Anyone know if the $16 from Harbor Freight will work, or do I need a better one? Any suggestions where else I could find one?
tanks
tanks