why do pens have a small hole?
480438
its so the pressure in the pen, when the ink leaves, when you write, is equal to the outside pressure. ink can still flow with gravity, otherwise a partial vacuum would form
1127963
They've been collected and horded by the notorious pen stealers. You've gotta watch out for them. They can be really sneaky and catch you more than once. Innocently they ask to borrow your pen, but then they never give it back!! Be on the alert, they will strike again if you're not careful!!
791107
The modern ball point pen was invented in 1938 by the Argentine-Hungarian journalist László Bíró. In the 1930s Bíró was working as the editor of a small newspaper. Bíró was frustrated by the amount of time that he wasted in filling up fountain pens and cleaning up smudged pages, and the sharp tip of his fountain pen often tore his pages. Bíró had noticed that the type of ink used in newspaper printing dried quickly, leaving the paper dry and smudge free. He decided to create a pen using the same type of ink. Since, when tried, this viscous ink would not flow into a regular fountain pen nib, Bíró—with the help of his brother George, a chemist—began to work on designing new types of pens. Bíró fitted this pen with a tiny ball bearing in its tip that was free to turn in a socket. As the pen moved along the paper, the ball rotated, picking up ink from the ink cartridge and leaving it on the paper. Bíró filed a British patent on 15 June, 1938.
905186
Check to make sure you havent run out of black ink and that the hole isn't bunged up with muck or dust.
143766
Simple!  A manhole is round so that the cover can never fall in.  If it were any other shape, like a square, rectangle or oval, you could take the cover out, flip it sideways and drop it in, but with a round hole and a round cover, it will always be just a little too big.\n\nPart 2:  I would still call it a hole if it was square.  Why wouldn't you?  Plenty of holes aren't round.  Button holes are very narrow compared to their length.  And I guess the Indian Government aren't concerned with people dropping manhole covers into a sewer, or didn't think about it.
133793
A white out pen (the kind that erases mistakes).  You can still see it, but it doesn't photocopy on white paper.
882053
The ink is equal to the blood.Why... I don't know..they flow easy as a river but are both damned and dammed.I cry about it but I am not a vessel for an essay.Let it Flow.
273424
Yeah I Have a really Big one Too. Its called a Writers Bump. There isnt really a way to Get rid of it but get a pencil grip, they work like a charm.
907280
Its caused by holding pencils or pens.... many people have them...
109463
there will always be holes they are called pores. you can however use a pore reducing and cleansing wash that helps them look better
451332
The same way I use a pen.
83782
as u know atoms are microspical, normally the distance btween bonded ions are microscopical too!! infact the space between 2 ions are sometimes lesser than the diamiter of the atom itself!\n\nhere's a demonstration for u to understand this phinomina more clearly; take about 10 pieces of paper and pin tiny holes randomly on each paper. now keep each piece of paper on top of the other; eventually u will not see the otherside of the paper through it (or the visibility is very low than a single holy piece of paper), even though each single paper had singnificant nmber of holes to see through!\n\nA thing is formed of many million layers of this ions. so even though it has microbial 'holes' the loght cant go through & since these holes are microbial, the thing still feels solid because there are more dencity of ion than space!\n\nhope u understood wut i try to mean LOL
607631
We have successfully been refilling ink cartridges for months. Sometimes it takes a little time for it to sink down and print correctly. Clean it a few times, and if it's still not working, leave it overnight. For some reason, it always works for me if I just give it time.\n\nAs far as which holes to fill, just follow the instructions with your refill kit.
75677
Cavities are caused by the action of acid on the enamel of the tooth. The acid is produced by bacteria in the mouth that feed on sugar (and, actually, simple starches, which are converted to sugar by saliva). The acid dissolves the enamel of the tooth surface causing little holes in the teeth.
723279
Hey, are you talking about two "eyes" in the sides of the end of the foley tube that sits inside the bladder? If so, they're there to let the urine drain out more efficiently. If there was just the one big hole in the end of the tube that sits in the bladder, then "low-lying" urine would be too low to make it out of that hole.  That's why there are those two "eye" holes in the sides of the end of the tube.
988161
Look at the bottom, there should be a little plastic cover with a hole in it..   Use some electrical tape to cover that hole.\n\nDrill a small hole in the front left or right corner of the top cartridge, being careful not to touch the plastic bags inside.\n(if you drill a hole in the middle you will rupture the plastic bags and you will have a cartridge that will not stop leaking)   Especially avoid that little white vent,  I know it is tempting to want to fill there.\n\nInject 40 ML of ink.\n\nSeal hole with hot glue.  MAKE sure you have a tight seal or you will have a mess on your hands.\n\nRemove the electrical tape from the bottom cover.  It is covering a little hole called a maze hole.  \n\nThis is the tricky part, you will want to use a blunt syringe (no Needle)  to remove 2-5 ml of ink from the bottom of the cartridge.  This will re-pressurize the cartridge and prevent it from leaking.\n\nTurn the cartridge right side up, make sure no ink is leaking from the bottom.  If so remove a couple more ML of ink from the bottom. \n\nWhen you finally have the right pressure the cartridge will not leak.   It is then safe to re-install.\n\nRun a couple print head cleaning then you are ready to start printing again.
180877
I assume you're talking about the marks the pen made in which case, why worry about it??  Now that it is dried, it won't come off on your clothes - it will eventually fade away...   Heaven help that load of clothes it got washed with!\n\nIf you're talking about the marker itself (if I take your question literally) - who knows?  You didn't say where it was stuck.