Experiment No. 1
Experiment: To lift a counter by blowing air over it!
1) Put the counter on to a table and the saucer a little way from it.
2) Blow air over the top of the counter and see if you can make it 'fly' into the saucer.
Result: The Counter rises and falls into the saucer (if we were lucky - our aim was not too great!!)
Conclusion: The counter rises into the saucer because your breath blowing at speed over the top of the counter is going at lower pressure than the air under the counter. The slower moving air (at higher pressure) lifts the counter into the air.