0
What else can I help you with?
Who invented pencils and how do they write?
who invented the pencil, i don't know a pencil works because the sufrace of the paper, on a microscopic level, is very rough. the structure of the graphite that makes up the "lead" is of layers just 1 atom thick that can easily slide over each other and rub off upon contact. so when the pencil is moved over the paper, the rough surface causes the graphite to rub off onto the paper and become trapped in the dips and hollows of the surface
How do you brake a pencil with a dollar?
Fold the dollar until it is a small, thick strip of dollar bill. It should be rectangular in shape. Put the pencil so that the middle is exposed but both ends of the pencil are on two separate pieces. Use the dollar to pull down the pencil through the middle, even though the two ends are on separate tables or other pieces of furniture. You will break the pencil this way using a dollar bill.
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.
How thick is 10 milimetres?
10 millimetres is the same as 1 centimetre. Or approximately half an inch....
How thick is .42 cm?
A thickness of 0.42 centimeters is equivalent to 4.2 millimeters. To give a sense of scale, this thickness is slightly less than the width of a standard pencil, which typically measures around 7 mm.
How thick is pencil lead?
Pencil lead, also known as graphite, is typically 0.2 millimeters to 1 millimeter thick, depending on the grade of the pencil. The standard size for most mechanical pencils and fine-tip mechanical pencils is 0.5 millimeters.
Is a pencil a wedge?
Not unless you use it as one. The wedge shape of the pencil is only useful because than you only get a small amount of graphite off the tip instead of a thick line.
How do we know graphite is a metal?
Graphite is not a metal! It is a crystalline form of carbon in single atom thick sheets.
Who invented pencils and how do they write?
who invented the pencil, i don't know a pencil works because the sufrace of the paper, on a microscopic level, is very rough. the structure of the graphite that makes up the "lead" is of layers just 1 atom thick that can easily slide over each other and rub off upon contact. so when the pencil is moved over the paper, the rough surface causes the graphite to rub off onto the paper and become trapped in the dips and hollows of the surface
What household item is 1cm long?
A pencil is about 1cm thick
How thick is one eighth of an inch?
About half the width of a pencil
What is an object that thick 2 millmeter?
The lead of a common pencil.
What is the conclusion of broken pencil?
-the pencil looks broken & bent in water. - the pencil looks bent, because of the refraction of light, that causes that to happen. -pencil looks really thick, in water.
How do they get lead into a wooden pencil?
Take a look at the writing end of abrand new wooden pencil before sharpening it; it appears that the wood casing is one solid piece. This might lead you to believe that pencil makers bore a hole straight down the middle of the wood and then slide in a rod of lead. Although early pencils were constructed in this manner, it is not how most wooden pencils are mass produced today. Early pencils were crude versions of today's standard model. The first pencil was just a chunk of graphite used by carpenters and artisans to make markings without denting their materials. This evolved into a graphite chunk wrapped in sheepskin, followed by a string wrapped graphite pencil, the first pencil with a rod shaped graphite core. To use one of these pencils, the writer would have to unravel the string as the graphite wore down. The next major leap in design was hollowing out a stick of cedar and sticking a piece of graphite down the hole, an idea often credited to the Italians. The English embraced this idea but simplified the manufacturing process considerably. Instead of hollowing out a piece of wood, they simply cut a groove in the wood, inserted a piece of graphite and broke it off level with the top of the groove. They then glued a small slat of wood on top, encasing the graphite. Today, most wooden pencils are mass produced from large blocks of cedar cut into slats. A machine cuts eight grooves, half as deep as the graphite clay rod is thick, into the slats, and then places rods in each groove. Once the rods are in place, a second grooved slat is glued on top of the first. When the glue dries, the slats are fed through a cutting machine that cuts the wood into various shapes and divides the slats into eight separate pencils. The seams where the two slats are joined are sanded down and several coats of paint are applied to the pencil, giving it the appearance of a solid structure. More than 14 billion pencils are produced in the world every year, enough to circle the earth 62 times. This pile of pencils includes a wide variety of styles and widths. If you've ever have taken a fill in the bubble test, you're probably aware that pencils vary in darkness. The number printed on the side of the pencil indicates hardness and darkness of the graphite core: the higher the number, the harder the graphite core. Because a hard core leaves behind less of the graphite clay mixture on the paper, it will have a fainter mark than a softer core.
Can a pencil be 7 grams?
Yes, depending on how thick of lead you got in your pencil will very, if you have 2 pb than it can weigh up to 10 grams
How are types of carbon formed?
Allotropes of carbon, that is the different structures pure carbon forms are made in the following ways. graphite is formed by carbon deposits put under pressure causing the carbon to form hexagonal latticed sheets. When graphite is subject to intense pressure and heat it will form a much stronger crystal lattice which is diamond. Graphene Graphene is difficult to make, it is essentially a single sheet of graphite just one molecule thick. it is normally chemically synthesized at a great cost. You can make it in you own home however by rubbing some graphite pencil lead on sellotape folding it over then tearing it back. And there's a small chance that you may peel off a layer 1 molecule thick. Not that you'd notice.
What does a 4N pencil mean on a pencil?
There is no 4N... 4H = Extremely Hard and will make a light mark. 4B = Extremely Bold and will make a thick and dark mark. HOPE THIS HELPS! :)
