Science Gossip Talk
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I'm not sure if it's illustration or just an ornament
Posted March 19, 2015 3:01 PM
I think it is illustration of the loop which you get following the instruction: "Take a piece of iron wire...."
Posted April 5, 2015 7:34 AM
It is an illustration as long as it is mention in the text.
Posted April 5, 2015 10:56 AM