An interesting experiment with water and air.

[Newton II]

I think This experiment has an interesting analogy with flow of electric current.

When electrons flow through a wire under electric potential just as water flows through tube under hydraulic potential,  something very lighter than electrons surrounding the wire should flow into the wire just as air which is very mcuh lighter than water enters the tube when water is flowing in the tube.

If you compare vaccum surrounding the wire to the atmosphere surrounding the water tube,   vaccum should 'inject' something to the wire when electrons flow through the wire which can be nothing other than magnetic field!!

So, it leads to a question  whether the magnetic field is created by moving electrons or the vaccum itself?   Because if moving electrons produce magnetic field then we have to get a moving magnetic field or rotating magnetic field around a wire or a wire coil but as we know we get only static magnetic field around any coil or permanent magnet.

Whether the magnetic field is produced by moving electrons or vaccum?

Funny or interesting question?

[conradelektro]

See the air bubbles rushing along with water!

I think that you could easily find out by yourself (because you might have the set up still available) whether something interesting is happening.

You make the water (with the bubbles) flow. I guess that the end of the hose E (outlet) will be below the "water head H". You let the water (with bubbles) flow for some time (may be 20 seconds) and then you try to raise the end E of the hose slightly higher than the "water head H" (see the attached drawing). The water should stop flowing after a few seconds. If the water is still flowing, you raise the end E of the hose even higher. Measure carefully how high you can place the end E of the hose without stopping the flow.

Greetings, Conrad

[TinselKoala]

Anybody who has ever tried to suck up a chocolate malt through a drinking straw with a crack in it knows the result of this thought-experiment.

[vineet_kiran]

Video at :

http://youtu.be/KWG2CWXQaZ0

It is not thought experiment.  Please have a look at the video.  You can see air moving inside water in full line instead of bubbles with high speed when sufficient water head is provided.

It depends on how you fix the cotton piece in the hole.  If cotton is very tight,  air will not enter the tube and if cotton is very loose, then large quantity of air enters the tube seperating the water column and stopping the water flow in the tube. You have to keep the cotton slightly loose for the air to enter in less quantities into the tube. (you may have to do several trial and error with fixing of cotton)

[Cherryman]

I'm not a scientific person. But i do use this principle.

I use some kind the same principle to aerate my fish tank.
The moving water creates a negative pressure at the opening, as longs as it is not in the flow path , related to the flow speed.
You don't even need the cotton, just use a t-joint pointing sideways or higher and the falling water will drag the air along. Even a well placed hole will do, put there are more efficient shapes, depending on the use.
It works as well with the outlet above as under the water.
If you attache a small pomp, you can circulate the water and add air at relative low cost.
Myself I use it in a gravity based aquaponics system




I vaguely remember some claims of energy gain when using only the created vacuum , with one high speed waterflow and multiple openings.  It always intrigued me!


A bit of the same principle as the "River Compressor"  were they use a minor height difference to create usable compressed air for factory use.





If i ever could afford a place along a small stream, personal energy crises would be over ; )