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, January 11, 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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