How many drops of water can a penny hold?
AUandAG
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137 in this case.
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14
AUandAG
Posts: 24,783 ✭✭✭✭✭
Comments
What is the volume of a "drop?"
1/2 the volume of two drops.
bob
Wow, 137??
I would have been way off.
Much less than a Morgan dollar!
PS You guys have too much time on your hands.
About 1/20 of a milliliter/cubic centimeter. An old rule of thumb in chemistry is 20 drops in a milliliter.
Unless you "split drops." In either case, the OP is clearly bored
LMAO!! He got you on that one @RogerB !!
DiggerJim
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I'll see your "1/2 of 2 drops" and raise you "0.05 ml surfactant."
Yep, I'll see your raise and raise you the bathtub bubble water.....all in.
bob
That's a tough raise --- I think you're bluffing --- raise you one bathtub ring AND a liter of soap scum !
Way more drops then I would have guessed also.
Must be hard water.
Add a drop of jet dry and see what happens.
A whole liter? Got me Roger, I fold.....it was a bluff.
bob
Trick question. It's a one cent piece.
The sharper the rims ,,,,,, the more water drops it will hold,,,,,,,,
It is up to the size of coins and the height of edge.
Knowing more information about challenge coins.
Time to drop this topic.
Dropping this topic may cause an issue with some snowflakes.
Curious... At what point (how many drops) did you begin taking pics, expecting the next drop to spill over?
OK... Now this thread must set some kind of record... The weirdest question? The strangest exercise in futility? Totally useless mental meandering??
Cheers, RickO
I don't think it's a pointless exercise. From the pics, it looks like this may be from a Physics or Chemistry class (coin is on a classic lab bench). It's probably a simple visual experiment demonstrating surface energy/surface tension or some similar concept . In an introductory science course, providing a visualization helps students grasp the concept much better than having them memorize a bunch of equations. Add a little competition to the exercise like who can guess how many drops or which group can fit the most drops on a cent, and you've taken a potentially boring lecture and grabbed the attention of the students
I wonder if the next experiment was adding something to the water and repeat the test.
However, I agree that it is meaningless for numismatics
OK
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Same here
It's been endropsulated. (another new word)
If you freeze the water first, you can get a whole lot more onto the cent.
Actually, surface tension has a very practical numismatic application. When I do specific gravity tests, the surface tension gripping the wire that the coin is suspended on can affect the reading. A tiny dab of Ivory dishwashing liquid breaks the surface tension.
Only Mr. Van der Waals would know for certain. I called him this morning and left a message concerning the matter with the secretary. I'm not confident he will get back to me. The secretary said that he has been away from the office for quite some time and is thought to be currently indisposed.
Hmmm...I figured that an English or Australian "Penny" would hold quite a bit a more since it has more area than an American "Cent".
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I tried to put a drop or water on a high relief bronze medal and it rolled off.
My US Mint Commemorative Medal Set
Try it with the footprint on the moon.
It never ceases to amaze me how the metric system always seems to end up with round numbers
How many drops of water are in a gallon?
It does depend on the size of the drop, however it is generally accepted that one drop of water is 0.05ml for pharmaceutical applications – which means that there are 20 drops of water in 1 millilitre.
1 gallon = 4,546.09 millilitres
90,921.8 drops of water in a gallon, or for you metric folk –** 20,000 drops in one litre.**
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what temperature? I can probably make an Ice cylinder of several thousand drops...
ANA 50 year/Life Member (now "Emeritus")
Looks like 1 (one) drop to me
Steve
It's a wonderful lab. I've used it for many years. It's got to do with "adhesion", the water holding on the the face of the penny; and "cohesion", each molecule of water holding onto itself and the others. When the total mass of the big major drop of water passes the amount of surface tension the water is able to hold ... it breaks and falls off. The "Jet Dry" ... or any detergent of your choice, will wipe out the surface tension immediately; that's part of how washing works.
The rest of the full lab that I use includes floating paperclips, racing drops of water through a maze and making boats out of aluminum-foil and seeing who's boat will hold the most pennies. I do this lab over three(3) days using the cafeteria and including multiple classes. The other teachers all buy me lunch that week for giving them an extra break.
A "Dew Drop In" cent.
Depends on the size and form of drops.
Knowing more information about challenge coins.
You could do a experiment to test it
Knowing more information about challenge coins.
There are 3,785 milliliters in a gallon. Where did 4,546 come from?