1、先把碎纸屑撕成小块状。
2、再把梳子摩擦。
3、最后看看纸屑被吸上梳子没。
实验发现：最后，有许多纸片被吸上梳子。
实验结论：只要有正电荷和负电荷存在，就可以把两个物体吸在一起.
Experimental procedure
In 1, the scraps of paper torn into small pieces.
In 2, then comb friction.
Have a look 3, finally being sucked comb not confetti.
Experiments show: finally, there are many pieces of paper being sucked comb.
Conclusion: as long as there is a positive and negative charge, can take two objects are sucked together