We can get them to float by putting them on bits of tissue
When the tissue gets wet and sinks, the needle and paper clip continue to float (the pin was too heavy). This is because the surface tension of the water keeps them floating. 
Friday 11 January 2008
Floating Needle
Things like a needle, a paper clip and a pin sink if you put them in water
We can get them to float by putting them on bits of tissue
When the tissue gets wet and sinks, the needle and paper clip continue to float (the pin was too heavy). This is because the surface tension of the water keeps them floating. 
We can get them to float by putting them on bits of tissue
When the tissue gets wet and sinks, the needle and paper clip continue to float (the pin was too heavy). This is because the surface tension of the water keeps them floating.
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