Who invented the eraser on the end of the pencil?
It's been more than 150 years since the eraserattached itself to the pencil. We can only assume that hymen-lipmanwas a man who made his fair share of mistakes, but they may have inspired him to stick the eraser on the end of the pencil, making it more convenient to erase the written errors. He got a patent for the development on this date in 1858. Lipman's early version was a pencil with a groove at the top, into which he glued an eraser. He sold his patent in 1862; the US Supreme Court later invalidated it, saying that since combining a pencil with an eraser did not change the function of either item, the pencil-with-eraser could not be patented.
Pencils are made of wood and lead.
Lead is a poison substance that
can make you really sick
or even kill you if obtained to much.
15 pens. 5 pencils.
Who is wiser a pencil or a pen?
A pencil would be wiser, it can learn from mistakes and change. A pen on the other hand is very sure of themselves, and can not be molded to change.
What is the spelling for pencil case in french?
the spelling for pencil case in french is "une trousse".
What elements are in a pencil?
Carbon in the part where you draw with and then the elements that make wood which again is mostly carbon but there are many more elements that make up wood.
yes pencil fades on paper overtime especially pencil drawings this is due to the friction caused when paper rubs off against each other even when flipping pages and with moisture one day you will have a dark line drawn of pencil then later the line becomes lighter and lighter until you can easily erase them.
On a science level i think its because the paper molecules are breaking down constantly
Who is the wielder of the blue pencil?
Here at WikiAnswers? Everyone. BUT, we are expected to wield our own blue pencils. In general usage the expression "to wield the blue pencil" means to be a censor - generally of bad language or legally dubious content.
where x is the cost of one pen, y is the cost of one pencil:
3x + 5y = 2.25
5x + 3y = 2.95
Just need to isolate x in the first equation: x = 2.25/3 -5y/3, or 0.75 -5y/3
then, substitute .75 -5y/3 for x in the SECOND eq. :
5(.75 - 5y/3) +3y = 2.95
Next, solve for y. then use that value to solve for x. too tired to finish...
there is a mass produced version of a pencil with a micro chip [ being as you were to vague with your Q ill give it my best A ] the " fly " pen which has various functions but is very expensive
A "pencil" is a tube of wood containing a core of graphite. It is often used for writing or drawing.
Where did the pencil originate?
It was made in Lewisburg, Tennessee, United States by the Stanford Corporation or something.
How many circles can you make with 2 pencils and a paperclip?
5- two by using the lead point of each pencil and 3 by using one lead point and the eraser end.
The pen remembers what the mind forgets?
This could mean that writing down thoughts or ideas helps to solidify them in our memory. By externalizing our thoughts onto paper, we create a tangible record that we can refer back to in case we forget. Writing things down also allows for reflection and deeper processing of information.
Who invented the pencil writing pencil?
who actually knows the pencil was invented at least 100 years ago
What does 2b the pencil stand for?
2B stands for 2Black.
It is the softness or hardness of a pencil. If you thought there was only one pencil type, think again. There are a variety of lead pencils, ranging in softness or hardness. ^^