how made sand clock ? explain on your words
yuv5:
first take two glass. each are in opposite direction and added some sand on it. after some time sand will fall down.. hence its start
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5
first take two glasses and tear from bottom...join them from below and melt them to make a small opening....before doing that add some sand and rest is done...
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1
First take 2 bottles and cut it and join with that caps first holl in cap and join that and in one bottle put the sand
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