Sunday, 19 April 2009

The Watermelon And The Coffee Bean

Now when I look at a bar magnet, I can't help but feel as if it's floating on the surface of some imperceptible liquid. Those iron filings which expose the magnetic flux, are more of a revelation about the surface tension they create in the fluid; like a frog on the lily of a pond; like an iron bar in a bathful of treacle. The fluid I speak of though is the aether. A perfect fluid, made imperfect by tensions which are generated by matter. We can sometimes 'see' these tensions, as when they arise around electrical conductors and bar magnets, and take the shape of magnetic fields.

We've seen how an AC circuit creates tension in the aether field, by generating a repulsive wave, a shockwave, which rips the tranquility of the aether apart, initiating polarity, and exposing electricity as the very life blood of the aether. The air being a good insulator, the repulsive wave grasps the more ideal route through conductors. At the end of the repulsion, the aether folds back into the gap to restore balance. In an AC circuit, this cycle of shockwave and then collapse, takes place 100 times a second on a 50Hz supply. The question that arises is: how does a permanent magnet maintain the tension in the aether field? If an AC circuit uses a generator to drive the tension, perhaps we could say it does so by vibrating the polarity of the magnetic field. What, if any, vibrations take place in the magnetic field of a permanent magnet?

I have come to view the magnetic field around a bar magnet somewhat differently than most textbooks. I have a 3-dimensional image of the bar magnet as if it is stuffed inside a watermelon. The watermelon being the magnetic field between the north and south poles only. The north and south poles are exactly at the top and bottom of the melon. There's other stuff going on outside the bar magnet, but for the moment, we're focused on what's happening between poles. The bar magnet thus physically represents the straightest line, the shortest line, the most direct route from north to south poles, inside the magnetic field. This straight line represents the very centre of the electromagnetic field. A hole now appears at the top and bottom of the watermelon and it takes on a much more toroidal shape. Our watermelon starts to look more like an apple.

Toroids are rotating, not along their outer circumference like a steering wheel, but they're rolling such that their centres 'turn inside out' and move to the outer edge, then roll back into the centre. Well, that sounds very much like how a smoke ring moves through a room. A smoke ring is a vortex ring. If you imagine you were able to ride along side the vortex ring, the fluid at the centre is moving forward, and the fluid at the edge is moving backwards. The fluid near the centre of the vortex circulates faster than the fluid from the centre. The fluid pressure in a vortex is lowest in the centre where the speed is greatest, and rises progressively with distance from the centre. If you're new to the mechanics of smoke rings, or fancied finding out how to make them, this site is mucho cool:
http://www.waynesthisandthat.com/airblasters.html

I thought it interesting that the best smoke rings developed when the diaphragm moved from a concave shape - all the way through to a convex shape. Both these shapes are paraboloids. Two paraboloids can be used to create a hyperbole where they face on another. Here though, the paraboloids do not face each other but point away from one another. I might suggest you draw this on a bit of paper. Start with the diaphragm pulled out - a paraboloid with it's centre pointing to the right; then show a straight line as the diaphragm is pushed level with the tube; now the diaphragm is pushed even futher down the tube so it forms another paraboloid, but this time it's centre is now pointing to the left; put this all together and you get something like an oyster with it's mouth clamped shut; a coffee bean; and if I embellish a little, a watermelon with a straight line drawn down it's centre.

Smoke rings don't push their way through the air as you might expect, but rather, we are told it is friction which causes the torus to tractor itself forward. I'm not so sure. Is it possible that there is another unseen force pulling the smoke ring forwards? When the air exits the hole, friction with the rim retards it, causing the air in the centre to move forward faster than the air at the edge. Smoke is caught up with the slower moving outer layer of air that is being dragged backwards. The centre "blob" of air is still moving forward faster but the smoke is not highlighting it. Eventually, air friction eats away all the energy stored in the vortex and the smoke ring drifts to a stop (however, in a frictionless fluid, a vortex ring could go on forever). This movement of current moving out from the centre to the sides, plus the mention of some type of suction force at the core, reminds me of solenoids, and ultimately, magnetism.

Both poles of a magnetic field of a solenoid, or bar magnet, both suck and blow. For me at least, it is not as simple as following convention and saying magnetic flux flows from the north pole to south. Like poles repel, and unlike attract. Surely, both poles act out both forces of attraction and repulsion. The mouths of the north and south pole both exhibit centripetal and centrifugal forces. The centripetal force, the force of attraction, works not only on attracting opposite poles, but also on some metals for example. The centrifugal force though, the force of repulsion, appears to work only on other magnets.

When we put a plunger in the opening of a solenoid, forces of attraction try to suck it down. The core is sucking down something which passes through the iron-core of the plunger. It's not so much sucking down the plunger, but rather, it is trying to suck something down through the plunger. The plunger has simply got in the way. The plunger is a hapless canoe drifting down the rapids. This would appear to indicate that the plunger's iron-core allows the aether to pour through its substance, at a rate which is higher than most substances, and in so doing, pressure forces thus become visible. I shall return to these forces of pressure in later posts.

How is it possible that both poles of the magnet exhibit both centripetal and centrifugal forces? This differs from a smoke ring, which can only be described as having one pole, but, does exhibit both centripetal and centrifugal forces. The centrifugal forces we see, but the centripetal forces remain hidden ... for now. Is the smoke ring therefore behaving like a monopole? For a bar magnet to exhibit both centripetal and centrifugal forces at either pole, the fluid of the aether would have to enter the magnet from both poles. It could look something like two vortex rings, back-to-back, one feeding the other.

I don't think there is any vibration, as such, at work in maintaining the tension in the aether around the bar magnet. The bar magnet acts as a conduit for the aether to flow through - in both directions. The bar magnet allows the stuff to just keep on flowing. The aether is funnelled through the bar magnet. Is the bar magnet describing surface tension, where its centre is lower than the two poles? Is the bar magnet simply acting as a cold energy sink?

For those who seek eccentricities in nature, I would suggest slicing an apple in half, but do so around its equator. When you open it up, what you get is a five-pointed-star. A pentagram. A clue perhaps?

Many thanks
http://www.waynesthisandthat.com/airblasters.html
http://www.interactives.co.uk/me_toroidalvortex.htm
http://en.wikipedia.org/wiki/Blood_pressur
http://amasci.com/wing/smring.html
http://www.hasslberger.com/phy/phy_1.htm
http://www.sciencetoymaker.org/vortex/explore.htm
http://www.deepocean.net/deepocean/index.php?science09.php
http://en.wikipedia.org/wiki/Watermelon
http://www.thephotoforum.com/gallery/files/96-junephoto45-SurfaceTension.jpg
http://www.agministries.org/2008/05/apple-day.html

http://www.webstockpro.com/Brandx/bxp254387.Coffee-bean-Photo/