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When a pencil is rubbed on paper fiction causes a small amount of the graphite from the core of the pencil to be left on the paper. This leaves a visible mark.
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∙ 16y ago
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When was the last lead pencil made?
About 3 seconds ago. "Lead" pencils are the graphite ones we use all the time, those yellow things that you sharpen in a pencil sharpener. Lead is dark gray and leaves such a mark on paper. It isn't really lead in the pencil, we just say that.
How many miles can a number 2 pencil write?
55Answer:Obviously the answer varies with how heavy a mark you leave and the length of the pencil. Start by assuming that a pencil is 17 cm long and has a diameter of 0.2 cm (which gives a volume of just under 0.55 cm3. If you just touch the paper so the line is 1 layer of carbon atoms thick (about 1 nm) and the full 0,2 cm wide the line would be somewhat under 300 km (180 mi) long. Application of some skill in twisting the pencil so the line is thinner could double or triple the line length.
What is the function of a pencil?
the function of a pencil is to write with out getting your hands dirty and to be able to write on paper instead of stone.
How do you write a sermon?
You start with a pen/pencil and some paper.
How to construct ellipse?
Fix two pins, through a sheet of paper, into a board. Take a string and make a loop that is large enough to go around the two pins with some slack. Put a pencil inside the loop formed by the string and pull the pencil out as far as it will go. When moved round the pins, with the string tight, the pencil will enable you to mark out an ellipse.
What minerals is soft enough to leave streaks on paper?
The mineral graphite is soft enough to leave a mark on paper. We use graphite, which is a form of carbon, as pencil lead. And it works pretty darn well at leaving marks on paper.
What mineral is soft enough to leave a streak on paper?
The mineral graphite is soft enough to leave a mark on paper. We use graphite, which is a form of carbon, as pencil lead. And it works pretty darn well at leaving marks on paper.
How long is the lifespan of pencil mark on paper?
The answer depends on a variety of variables, but the simplest is that barring further action on the pencil mark (rubbing, wear, etc), it will last as long as the paper.
Lead pencil to mark chromatography paper?
Yes, better than ink!
What is the graphite of a pencil?
It is the part of the pencil that makes the mark on the paper. Pencils used to use lead for this but the lead has been replaced with graphite.
Why do pencils work?
Friction of the paper allows the soft pencil to leave a trace of fine particles behind on the paper.
How do you connect 10 dots without lifting pencil?
it depends where the dots are and its easy just leave your pencil on the paper when joining them up!
How Can you leave scars on your wrists without cutting?
You can, like, with a pencil. Just do it hard enough, and it will mark. Just erase the pencil later on. And you can snap a rubber band onto the wrist. it will mark.
Why cannot you write with pencil on hand?
Because you skin is far too soft, a pencil lead needs a rougher surface to leave a mark.
How can you write with a pencil?
A sharp point on a pencil will be eroded by a rough surface (paper) and leave a coating of graphite. This does not immediately penetrate the paper and can be erased. After some time, the paper will absorb some graphite molecules into its structure, and erasures will not be complete.
How do you write with a pencil?
Hold and press the pencil down and drag it across the paper to create friction between the lead and the paper and the lead will produce a mark on the paper which can be rubbed out. You should already know this when you were 5 years old
Do fats leave a mark on paper?
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