1, the materials needed for the experiment: tape, scissors, plastic bottle , raw eggs. See the picture below:

2. The plastic bottle is cut from the center. See the picture below:

3, take the end near the cap, spare. See the picture below:

4, use tape to suspend the egg in the half of the plastic bottle, the center of gravity as far as possible down, the tape should not be taut, so that the egg can be slightly swinging but do not touch the bottle. See the picture below:

5, the egg from 3 meters high in the air. See the picture below:

6. The egg in the plastic bottle falls to the ground from the same height, but the egg is intact. See the picture below: