Science is the window to a new world, but it has limits there are still mysteries that cannot solve. Every magnet has 2 poles, this only happens with magnets made in labs. Read on and find out more what happens with magnets with 2 poles.
When you drive through the countryside, you probably pass by dozens of herds of cows munching on grass. But what you may NOT have noticed is that nearly all of them are facing directly north or south while grazing or resting.
Hynek Burda of the University of Duisburg-Essen in Germany did not really set out to study cows. He usually studies blind, naked mole rats that seem to have an internal magnetic compass. They always build sleeping nests on the south side of their homes. Burda asked himself, “Do humans have a similar compass?” He led a team of scientists that looked through thousands of Google Earth’s satellite images to study campgrounds, looking to see in which direction people set up their tents.
Unfortunately, tents are hard to see. What isn’t hard to see? Cows. Apparently, because I’ve never looked for cows on Google Earth myself. After analyzing the images the team found that cows tend to face magnetic north or south while grazing or resting. This was especially fascinating because this was the first time an internal compass was found in a large mammal. After more searching, they realized that deer also stand and sleep along the same lines.
The pattern remains consistent regardless of the wind or other factors. The only factor that lessened the consistency was how close the herds were to the poles. The closer they were, the less accurate their alignments became.
The phenomenon could have other implications maybe on agricultural production if cows are forced to stay in an east-west orientation. The mystery is Why? Why do they always stand facing North or South? Does it have a purpose? Do they feel more balanced? This behavior was observed among cows across six continents so it must be important.
Every magnet has 2 poles
According to the laws of physics, there is no reason why there shouldn’t be a magnet with just one pole. But except for magnets created in a lab, only magnets with two poles have been found in nature. Magnets create a magnetic field which travels in a direction, that ‘flow’ out one end and into the other, then back through the magnet. What pole it is, whether North or South, is a function of whether the magnetic field is flowing in or out at that point. Cutting a magnet in half creates new poles where the center was. You end up with 2 smaller magnets, each with a north and south pole.
In 1982, researchers at Stanford University, California, thought they’d detected a monopole magnet, but since nothing like it was ever discovered again most physicists believed it to be a fluke.
More recently, researchers from Oxford and Princeton described a system in a lattice of holmium titanate. This system appears to allow for a magnetic monopole to move freely around inside at certain temperatures. However, that is only a theory since this so called system has been found yet. So why don’t magnets have just one pole?? The question continues to pester physicists.
Argentine ants look like regular ants. But they’re possibly the only species who can compete with us in their quest for world domination. Argentine ants have colonized over three continents and all belong to the same inter-related colony. They refuse to fight one another but will voraciously attack other species and have become a significant pest.
The colony of super ants were native to South America but people have unintentionally introduced the ants to all continents except Antarctica. The enormous extent of the colony is paralleled only by human society. The ants all share the same genetic traits and are essentially the same ant population. In Europe, one vast colony of Argentine ants is thought to stretch for 6,000km (3,700 miles) along the Mediterranean coast. Another in the US, known as the “Californian large”, extends over 900km (560 miles) along the coast of California. A third huge colony exists along the entire west coast of Japan. Even if they grew up thousands of miles from each other, when scientists put them together they do not fight but are extremely aggressive with ants from other species. As if that weren’t strange enough if they are all from the same colony, how do they maintain their social structure?
Besides that, usually small organisms living outside their native environment usually evolve rapidly. The genetic code of the Argentine ants today hasn’t changed much for thousands of years.