Q1.

Hold two sheets of paper 2 or 3 cm apart with both hands as shown. Blow air down the space in between. Describe what happen and then try it.

用雙手拎住兩張紙，中間隔開2-3 cm。然後呼氣於兩紙之間，你估下有咩事發生(張紙分開還是合埋???)。估完拎兩張紙試下啦。

Q2.

Why I can Handle the ball without touching it?

點解我能夠凌空控制那一個乒乓球??