THERMAL TRANSFER OF WATER

[magiccaloy1972]

This is simply called molecular diffusion, a transfer of molecules self propelled by thermal energy. It is the transferring of particles from region of higher concentration to a region of lower concentration.

[havefun1989]

nature balance yeah

[day8765]

By the way Dan thanks for posting some thing that is so thought provoking. This is really a great thing to show. this is so much more then liquid transfer of heat but how every thing transfers heat. It is a law of heat transfer as we know it.

[day8765]

Be leave it or not it has nothing to do with how dense the water is. Do you think the same thing would happen if the cold water was the tank and the hot water was in the beaker? would the hot water stay in the beaker and the cold water stay in the tank?the cold water would be much denser the hot much less dense, so the hot water would stay in the beaker?

[stupidgenius107]

How the hell do you make a living doing this? And how can I do it too? Make a video on that, please.

[day8765]

I have gone back and read all the posts. Let me ask this" what would happen if the beaker had been placed at the bottom of the tank and a valve opened to the tank? from what I have read in the posts the cold water would stay in the beaker Right? If every thing I have read thus far in the posts this is a true statement. I do not know if Dan will do that and post it for us to see? But my guess is the cold water will come out of the beaker. Can any one tell me why? Yes I do know why.

[day8765]

I did enjoy this? I have to ask why did the cold water leave the beaker was it heaver? why did the hot water go into the beaker. how was the heat transfer take place. Or why did it happen. I know it happened, I know it happens but why?

[mac4tw]

@day8765 yup colder water is denser that warmer water in all cases except when it freezes.  then the "frozen water" (ice) becomes less dense that the warmer water

[ricardoucr]

@mac4tw If this were not an exception, the ocean would be frozen, so there would be no life as we know it.

[mac4tw]

@ricardoucr actually..... ocean water is salty, which has a lower freezing point that fresh water. glaciers are actually fresh water, which is why they freeze and float ON TOP of the salt water. so no.... this is not an exception.... and no..... the ocean os not frozen. I checked the other day

[ricardoucr]

@day8765 Hello, what happens is that when liquids cool down, they become denser, so because of this they are heavier. Same as air, for example, when you warm air, it losses density and travels up... When you warm a substance, internally the molecules vibrate more, so distance between them are larger as they repeal, that why you have less mass in the same volume...

[AngelLestat2]

really? you choose red color for cool water? :) nevermind, good video xd

[kokopelli314]

Does colored water heat faster than clear? Which colors heat fastest?

[ziggyhuys]

trollolol

[GREENPOWERSCIENCE]

@kokopelli314 With sun/light, darker is better. Black or Dark Green.

[hassoun6]

I wish you'd done the third possibility, of putting same-temp water in both, and food coloring in one of them, and submerge one into the other.

[josephdupont]

@hassoun6 Good point..

[BornAgainEngineer]

Cold stuff is more dense because the particles are closer to each other

like ice 0_0

[BiotechnologyChannel]

@BornAgainEngineer Actually, ice is less dense than water. That is one of the biological properties of water which allowed creatures to be able to live underwater, even During winter, since ice protects them from heat loss.

[JULYINJULY]

Like channel 2 in love with charlie brown.

[LTF85199]

@JULYINJULY Sorry this is January you don't deserve to comment this month...

[ch14aphilipp]

i get what your saying in theory, but what about the food colouring diffusion as well?

[a10fjet]

@ch14aphilipp then it wouldnt have concentrated at the bottom

[svtcontour]

I dont get what the video shows because cold water would be a bit more dense and so it would naturally fall and settle to the bottom. Something needs displace what comes out of the pyrex container and therefore, it will be the warmer water which is still at the surface. I dont think it has anything to do with thermal transfer and more with something needing to replace whats displaced and it just so happens to be whats available which is the warm water at the top.

[jackoadeetayo1]

@svtcontour interesting fact when water turns to ice it expands, crazy eh? like the colder it gets the bigger it gets, less dense, only substance that does that to my knoalage

[svtcontour]

@jackoadeetayo1It is strange, but I think it only gets less dense close to freezing (if I remember right) so 10C water should still be more dense than 20C water, but as it approaches freezing, it becomes less dense - than again I'm going by memory so I could be totally wrong. LOL.

[Sgrunterundt]

@svtcontour You are right. Water is most dense around 4 degrees C.

[Nomoreidsleft]

@svtcontour I think that's exactly what Dan's trying to demonstrate. The warmer water rises into the flask, while the colder water enters the tank. What's causing it is the difference in temperature. Density is exactly the function of temperature, since the material in both containers are the same. Ice has a larger volume than water because it forms crystals. Cold water is still denser than warm water, until it's actually crystalized into ice.

[svtcontour]

@Nomoreidsleft I guess it can be looked at it this way. I guess I was looking at density instead of heat but like you said, they are in this case linked.

[Munymuny200]

Cool :)

[shonuffLA]

neat