Having a model of the water molecule to show the uneven distribution of hydrogen and why that makes it polar was so very clever, the way you held the molecule tilted next to the stream of water to show the attraction was very clear and helpful. thank you for this.

@JeffersonLab

5 ай бұрын

You're welcome!

great video. it really allowed me to view what happens when not only water but other objects are attracted to one another.

I was looking so long for this video. Great explanation both in video and commentaries. Big thumbs up 👍

LOVELY!! Thanks for the specific notations!! I will use this for my science class!!

This was really well done. It made it so easy to understand visually.

Sooo, I came here because my cat was drinking from the faucet after we were playing on the couch. She went to get a sip, and the water bent towards her direction. We needed answers... thank you Jefferson Labs for the clarity. Now me and my cat can sleep at night

Pov: you're trying to understand what your science teacher said

@mr.alejandre9428

3 жыл бұрын

Yep especially our teacher let us study by ourselves. Without the help of them.

@naja1762

3 жыл бұрын

yea 💀

@farting358

3 жыл бұрын

yeah

@Rhubarb782

2 жыл бұрын

Yehhh

@dillonscringestuff2417

Жыл бұрын

He’s making me watch it

Yes. Although, even if you keep the charged object dry, you still have to battle the water vapor in the air. The more moisture there is in the air, the faster the charged object loses its charge.

@jossfangirl

Жыл бұрын

Hmmmm.....

@MrSuperadithya Glad we could help!

This is a simple, but intriguingly exciting demonstration. Well done :)

@martinamir8868

2 жыл бұрын

Here 11 years later

@Veronica-gb1fs

5 ай бұрын

@@martinamir8868 Here 2 years later.

Excellent video demo of this science-class chestnut! The little Mickie-mouse model turning in conjunction with the proximity of the charged object is quite effective and unique!

Wow that was amazing and really simple! Good job guys, nice video

Neat! I never tired this before! The friction creates the static and then it basically bends the water. I am going to try this on different things other than water.

@quadraticsequence Yes, holding the charged pipe under the cup does cause it to drain slightly faster since there's an additional force helping it to empty. And, since the water is forced to take a longer path when it falls, it takes a bit longer to fall than it normally would.

@hypnotize3311 How have you been trying to charge the items?

Awesome!

Awesome job!

this explains everything thanks for this

that is freaking awesome

In our experiment, the balloon was charged, not the water. We used the charged balloon to flip the water molecules in a particular direction, but they remained neutral. You could charge your arm and make it deflect the stream of water, but it would be very difficult to do it the other way around.

It could be a number of things. Make certain that the stream of water is just a trickle. Also, make certain that the thing you are charging (plastic pipe, comb, etc...) doesn't touch the water. Once the charged object gets wet, it doesn't work so well anymore. Another trick is to put the charged object as far 'upstream' as possible. This is where the water is moving the slowest, so it spends the most time near the charged object and is deflected the greatest. Good luck!

amazing!

thats cool! thanks!

Very good!

@Hamis121 Water. A cup with a hole drilled in it (1/8" diameter, I think). A ring stand to hold the cup. A bowl to catch the water leaking from the cup. Various objects to deflect the water with.

Wow this is amazing

@landllymhar It's just a ring stand that happens to be sized correctly to hold the cup by the rim.

There's only so much charge on the object and it can only impart so much force on the water. Increase the mass of water involved and the same amount of force becomes less and less effective. It's the same reasoning behind "If I can push a toy train with my finger, why can't I push a real train with my finger?"

thank you so much

Cohesive forces are between the material and itself. Adhesive forces are between the material and another material. The surface tension experiment you outline is an example of cohesive forces (the water 'sticking' to itself). However, the water sticking to the cup is a result of adhesive forces (the water 'sticking' to the cup).

@FelinaRocks It's being held by a ring stand. The lip of the cup is just the right size to not fall through the ring.

Yup, I used to do this with my comb as a kid. :)

Great video guys!

@JeffersonLab

4 жыл бұрын

Thanks!

@advthinker No one is calling anything useless. As a matter of definition, a static charge isn't moving. A static charge is just that - a collection of charges that aren't moving. As soon as it starts moving, it's no longer a static charge.

@arnob1 The loss of charge on the comb is primarily due to water vapor in the air. It's attracted to the comb just like the stream of water is. When a water molecule gets close enough, it can grab an electron from the comb. Then, the water molecule is no longer electrically neutral and is repelled by the negatively charged comb. This process continues until the comb is no longer charged.

@JeffersonLab Thank you so much guys for answer my question. Keep up the good work and i can't wait to see more videos. =)

this is awesome

14 years later and i get this recommended. Gotta say that's really cool

This is cute and has the style of something modern with 360P resolution... fun and clear explanation thanks guys

That's very Helpfull

@lawlzombeh It depends. If the metal is insulated from the ground, no. If it isn't, yes.

If they carry the same charge, their effect on the stream of water would tend to cancel each other out.

great, been looking for a cool science project for my niece.

Very impressive method to understand

@codeartha If you limit yourself to electrically charged items, then nothing. Water will always be attracted to an electrically charged object. However, water is diamagnetic, so it can be repelled using a strong magnet.

The clay model was trying to represent a water molecule. The red things are the hydrogen atoms, not electrons. In a water molecule, the hydrogen end is positively charged and the oxygen end is negatively charged. That's why we were facing the red things toward the pipe. If the pipe is negative, the positive (hydrogen) side of the water molecule will turn toward it, resulting in a net attractive force.

@WalkingFish1 You'll need to break the water into drops first. Sometimes, just breaking the stream into a mist is enough to give the drops a charge. Otherwise, you'll need to add charge by 'spraying' it in using something like a Van de Graaff.

@iBetYouDidnt No, it's exactly because water is polar and we put a static charge on the PVC pipe. This is simple enough for you to test on your own. And, electrons aren't the only particles with a gravitation field. ALL matter does. There's nothing special about the electrons in this regard. If gravity were really the cause of the deflection, it would deflect regardless of the charge on the PVC pipe. You could put a brick there and get a deflection. Try it out and see what happens.

@otamanlvhs Rubbing the items together does help the items get in contact with each other. But, the transfer of electrons isn't a frictional thing.

It bends more when the water is moving slowly. If you are doing this at the sink, hold the pen up near the faucet, right were the water comes out.

That's awsome I Never seen anything like it

@pameslinkoln Everything has charges, but the way the charges are arranged makes all the difference. If the molecule has a symmetric charge distribution, this won't work. Polar molecules have what's called a 'dipole moment.' Non-polar molecules don't. In essence, non-polar molecules don't have an electrical 'direction.' They don't know which way to turn in response to an electric field. We'll redo this with oil at a later date.

@HazelEyedMysteryGirl Styrofoam cups usually work well. If you have a wool sweater, or a cat, try rubbing it on that. Also, you only want a trickle of water and you want to hold the charged object up near the faucet (it's easier to deflect the water when it's moving slowly). The weather also plays an important role. If it's humid, it doesn't work as well.

@TheReasonWhyGuy Yes, we cannot determine the charge on the pipe/balloon/pen by watching the action of the water. The molecule flips in the way that you describe and you always end up with an attractive force. Now, we (think we) know the charge on the PVC pipe from the Triboelectric series. We know that PVP is polyvinyl chloride and that skin is... skin. The series tells us that, between these two materials, electrons are transferred from skin to PVC.

@joblessalex Right, in a transformer you trade voltage for current and vice versa. Energy has to be conserved and power is equal to voltage times current. The time is the same so VI on one side of the transformer equals VI on the other side of the transformer. Comparing it to household current and the car battery just gives me a feel for how those types of currents are treated

@izakst The charge on the charged object will be limited by the breakdown potential of the air and that will dictate the maximum amount of deflection you can expect to produce.

@Nomoreidsleft Yes! Exactly!

0:34 Don't let Disney hear you say that, lol. Great video; I need to try this at home!

@whaatisaweirdname

5 ай бұрын

Good news, they are safe now

@supermega1111 It's hard to scale up too much because you'll eventually get arcing between the charged object and whatever's a convenient ground.

Thank you

Yes, Newton tels us exactly this in his third law. The balloon exerts a force on the water, so the water exerts an equal but opposite force on the balloon. But, the balloon is attached to Joanna and Joanna is more or less attached to the earth. Since Joanna's mass is so much larger (no offense, Joanna!), it's harder to observe the effect of the force of the water pulling on her. It's there, though. It's just hard to detect.

@TheNachoMuncher If you could prevent charge from being transferred to (or through) the water, yes. You can try this yourself. Put a little puddle of water on a table and place a charged object right above it. You'll see the water form a little hill under the object. Get the object close enough and the water will bridge the gap. Then, what happens in practice, is enough of the charge on the charged object is lost through the water and the little hill collapses.

good experiment to show static electricity and water

Charge isn't transferred and the polarity remains unchanged. What happens is an organization of the water molecules. Rather than being more or less randomly oriented, the electric field from the charged pipe causes more of them to line up in one direction than another. It's similar to how you can magnetize a paper clip by swiping it on a permanent magnet. The magnetism is already there, but it's 'hidden' due to the random orientation of the atoms.

@kaelfergen We conduct electricity largely because of the dissolved salts that are in us. Pure water doesn't conduct electricity but, add a little salt, and it does.

PVC - polyvinyl chloride. It's the white plastic pipe you find in the plumbing section of home improvement stores.

@RandomFlashable It'll still work with something dissolved in water. It'll still work with food coloring in it.

Looking this up for a science class. x]

If you charge the water, you can make it repel from an object with the same charge. That's sort of what we're doing in our 'Static Electricity and Bubbles' video. In this video, the water is neutral. The water molecules have an uneven distribution of charge, though. It doesn't matter what charge the pipe of balloon has. The (neutral) water will always be attracted to it. If you want to be able to repel the water, you have to give the water a net charge.

@CleverMiner It'll work, but you'll have a much more difficult maintaining a charge on whatever object you are using.

@advthinker Well, by definition, static charges aren't moving. So, technically, no, they can't be used to charge a battery since you need an actual current to do that. Once static charges start moving, they are no longer static.

I just had this happen to me with honey, of all things and I was looking for some sort of explanation. This helps! I was pouring some honey into a cheap ziploc type bag, and the stream kept bending towards the sides of the bag and surprised me. I thought it was probably because of static somehow. The water in this video is doing the same thing! :)

@bobann3566

2 жыл бұрын

That is interesting.

Thnx for the info ......

@joblessalex I don't know the lethal limit for a 14 year old, but 150 mA @ 24,000 V seems high to me. That works out to be a 3.6 kW supply. That's the same power draw as 36, 100 W lightbulbs. I personally wouldn't want any part of that going through me. What is it that you are trying to do?

@TheReasonWhyGuy Water is diamagnetic. Diamagnetic materials become magnetized opposite the direction of the applied field.

@TheBueno789 It very well could have been if you have one of the old CRT-type TVs. They tend to collect a charge on the front surface of the glass screen. It wouldn't be overly hard for it to discharge through your earbud wire and into you.

@otamanlvhs Rubbing doesn't create static electricity, having two dissimilar materials in contact with each other does. Some electron transfer from one material to another. The item that loses electrons becomes positively charged while the item that gains electrons gets negatively charged.

¡Wooow!! That looks like a very Modern Lab!! Those Monitors are Cutting Edge Tech!!!!!

@JeffersonLab

4 жыл бұрын

The video is over ten years old, so...

Yes, it's because the charges are separated and the attractive end is always slightly closer than the repulsive end, so the attractive force is always slightly stronger than the repulsive force. Since molecules are held together by electric fields, a strong enough external field should be able to disrupt them.

@hypnotize3311 No offense, but I assume that your hair is clean? If it's not, it doesn't works so well. It also won't work well if it's humid. Don't know where you are now, but it's fairly warm and humid here today, but I'm able to make my pen pick up a little scrap of paper after wiping the pen in my hair a couple of times. How are you testing to see if there's charge? The more details, the better.

Wonderful 😊

You have given me the answer to something which has been puzzling me. When I try to dry the plastic trays of my steamer after washing up, the teacloth does not soak up the water, but just moves it around. If I leave them to air dry, they take forever. The static charge in the plastic must be powerful enough to overcome the absorption of cotton cloth and evaporation.

@JeffersonLab

5 жыл бұрын

Does the cloth soak up water in other situations?

@MescalineDaydreams Probably. The hotter the water, the more the molecules are moving around and the more likely it is they can be knocked out of alignment. Try it and see!

Have you ever tried this with a non-polar molecule such as hexane? I never have either and I keep meaning to because I have a feeling that by charge induction you could get the same attraction that you get with water. My thinking is that it would work the same as attracting small bits of non-polar paper or string with a charged object.

@arnob1 They do. That's exactly what we're saying at the 1:00 mark.

Actually, yes it does. Why does the stream deflect more near the top? Because the stream is moving slower and 'sees' the charged object longer. Pull on an object for a longer amount of time and you'll deflect it's path more. So, don't try to deflect the stream when it's moving so fast its broken into drops. Rather, do what we said in the previous comment and REDUCE THE FLOW so the faucet drips to begin with. You'll see that slow drops deflect as well as a slow stream.

I see , thanks for the info :)

@superkooliodude20 No, the water will always move towards a charged object. If the object is positively charged, the water molecules will flip the other way so that their negative ends are closer to the charged object. You still get a net attraction. You can tell that an object is charged by deflecting the water. You just can't tell what the sign of the charge is.

Probably easier to measure it directly by placing a piece of graph paper behind it and photographing/videoing the deflection.

@TheReasonWhyGuy It has to do with how an atom's or molecule's electrons interact with an external magnetic field. Every material is diamagnetic to some extent. There are other forms of magnetism (paramagnetism, ferromagnetism) that can exist as well and hide a material's diamagnetic properties. Diamagnetism is more obvious in atoms/molecules whose electrons are all paired. Do a search for 'diamagnetism' and you'll find lots of sites that can explain it more fully.

@TheResidentSkeptic A magnet isn't electrically charged, so you won't get much of a deflection out of it. If the magnet is strong enough, you could end up deflecting the stream of water away due to water's diamagnetism.

@AndromedaChao2 In the case of water, the other important factor is the shape of the molecule. If water were linear, like CO2, it wouldn't be polar. The fact that there's a positive part and a negative part isn't enough. The charge distribution has to be asymmetric.

Haha. I feel so dumb that I didn't already know this. Great video. :)

Not with electrically neutral water and a charged object. Those will always attract. Since water is diamagnetic, you can get it to deflect away from a very strong magnet.

Watch the video again. The water doesn't go away from the charged objects. It goes towards them.

soooooooooooooooooooooooooooooooo! cool!!!!!

Try using a styrofoam cup or plate. Rubbing it on your head should give it a pretty good charge. The weather also matters. If the air is humid where you are, static experiments are hard to do and objects don't hold their charge for long. In general, metals are good conductors. For this, though, you really want an insulator. That's why plastics (PVC, styrofoam, etc...) tend to work well. If you want to charge yourself up, walking across a rug will work. You'll need a Van de Graaff for more.

@1091Floyd21 Distilled water (essentially) does not conduct electricity. However, it is not true that distilled water does not contain ions. Some of the water molecules dissociate to form H3O+ and OH- ions.

@totallysickawesome Water molecules are polar. It doesn't matter if they are in a solid, liquid or gaseous state. They will be attracted to a charged object and then repelled by the charged object once they obtain charge from it. That's why you get shocked from static charge on dry days and not on humid days. Steam would behave like very humid air. The real trick would be maintaining a charge on the object you are using.

what can it be probably used for? its an awesome thing!!!!!