What: "It is one of those seemingly simple questions that kids come up with: "How does a pencil work?" A scientifically knowledgeable parent will dutifully explain that the grey stuff inside the pencil is called graphite, that graphite is like a stack of pancakes with each pancake being a layer of carbon atoms, and that when the pencil is moved across a piece of paper, the pancakes peel off to leave marks on the paper. But parents know that such an answer will only provoke more questions such as: "can you see one of the pancakes?"--> See the link....

Writer: Jeroen van den Brink

LCC:

Where: Reference Link Has Evaporated

Date: Aug 26 2013 6:48 PM