Transcription: This demonstration shows you that in the absence of air all things fall at the same rate regardless of their weight. In this tube I have a penny and a feather. In a minute I'm going to turn this tube over and as you might expect the penny will fall faster than the feather. Here we go. All right it happened just as you expected. The penny indeed fell much faster than the feather. Let's watch it again in slow motion. The penny hits now. The feather now. Alright, nothing surprising there. Now I'm going to surprise you. I'm going to take a vacuum pump and pump most of the air out of the tube. I'm ...
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