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this is a beautiful experiment which demonstrates static electricity. you will need plastic
straws, some woolen cloth and thread. first take the straw and punch a hole at one end
of the straw. make the hole in all 10 straws that you have. you can use colored straws
also. then a 20cm long thread and tie it at the end of the straw. do this in all the 10
straws you have. bring all these threads together, bring them together and tie a knot in all
the ten threads together. tie the knot in the middle of gathered threads. now rub all
these straws with a woolen cloth. when you lift thee you will see magic. all the straws
have been charged with same polarity and hence they repel. this is beautiful demonstration
of static electricity. if you give them a slight twist, they start rotating lie a chandelier.
if you bring you hand near them, they get attracted to your hand. now hold the straws
together and rub it with your hand and you can see that they have been discharged. now
they are not repelling. to repeat the same repulsion, rub the straws with the woolen
cloth again and again they get charged and they start repelling. so we can see that how
the straws first got charged than we discharged it by clasping with hand and rubbing it. and
then again rubbing it with woolen cloth to charge them. this can be done very nicely
on a cold day and you can enjoy static electricity chandelier. see how this adult is having fun
with this beautiful experiment.