The And Its Effect On Our Lives

What is magnetism? When two pieces of iron are attracted to each other by physical means or electrical means.

The current has a positive charge in one side of the coil and it transforms to negative when it gets to the other side of the coil. This charge controls the magnetic field, making the like charges repeal and the opposite charges attract.

The MRI scanner is a large magnet that is 30,000 times stronger than the earth’s magnetic field. The force increases as a person or a ferromagnetic object move closer to the magnet. The strong magnetic field of the MR scanner is Always on even when the MR scanner is not in use.

Voyager 2 discovered that Neptune’s magnetic field rotates once every 16.1 hours, and is tipped on its side. The magnetic field is populated by electrons and protons captured from solar wind or ionized hydrogen gas escaping from the planets. Earth’s magnetic field, on the other hand, is tilted 11 degrees from the spin. Earth does not have a constant direction because of the dynamo effect. The dynamo effect is part of the rotation of Earth. The Earth has magnetic poles; the North Pole and South

Magnetic field strength is proportional to the speed at which the charge moves and the size of the charge. Protons are made up of 3 basic properties, positive electric charge, a very small mass and spin. A protons charge is extremely small although the speed at which is spins is extremely quick. This creates a magnetic field that can be detected. About 70% of the human body is comprised of water and water is the largest source of protons of any substance within the human body. This is followed by fat. The direction of the protons magnetic field is randomized when no magnetic field is applied. Similar to a compass, the magnetic field that the proton creates can be aligned when another large magnetic field is introduced. In MRI this field is known as B0. (Simplyphysics.com,

A magnet is an object that has a magnetic field. It can attract heavy objects such as iron and steel. A magnet can be in many shapes and sizes. The word magnet came from the elderly Cretan shepherd, Magnes. He supposedly found a rock that had a strong magnetic force. In the rock was large amounts of lodestone. The most common magnet used today is the bar magnet. They can also be used in compasses.

The human body is mostly made up of molecules of water (H20) .The body is made up of 60% hydrogen atoms. The nuclei of hydrogen atoms are composed of one proton (a subatomic particle containing a positive charge). These protons are very sensitive to magnetic fields, and when they begin to spin they produce their own magnetic field. This means that the nucleus of a hydrogen atom acts like a little magnet. When the human body is exposed to a large magnetic field, these protons line up. A similar phenomenon occurs when compass needles line up when surrounded by a magnetic field. However a proton goes through a

These are usually the two places that magnetism is the most powerful. These poles are called the north seeking poles and south seeking poles. When you put two alike poles together, for example, two north seeking poles, they will fight and repel against each other. When you put a south and north seeking pole together with a south seeking pole, they are attracted to one another and stick together. The attracting, or repelling of magnets, depends on how close they are. They also depend on how strong their magnetic fields are. The further apart magnets are the less attracted they are to each other, The same goes for how much they are attracted to each other. Magnetic force strength depends on how big and how far apart magnets are. When a magnet is broken into little tiny pieces, a north pole will appear at one end of it along with a south pole. No matter how small or big the pieces are, they will still all end up having a north pole, and a south pole. The larger a magnet is, the stronger it becomes. Also the closer it is to an object the stronger it will become. This is how most normal magnets behave(“Website,”

The purpose of this lab experiment was to study the magnetic field that surrounds a magnet and to see how the strength of the magnetic field change with distance from a magnet. The experiment was successful in achieving its purpose and in proving the theory of the experiments. In the experiment that we needed to show the magnetic field surrounding a magnet, we used a piece of paper, a magnet, and a compass to show the magnetic field. To view the magnetic field that is surrounding the magnet, we placed the magnet in the middle of the paper and placed the compass in the north pole of the magnet to see where the arrow is pointing, marked that point, and then placing the compass at the point again to see where it would point. We continued this

themselves. Magnetic field is a phenomenon which cannot be directly seen or easily felt, however its results can be seen and felt. Today, with the development of technology its measurement via devices has become possible. All substances are of magnetic fields, either living or non-living, weak or

Electromagnets can turn electrical energy into motion. Likewise the converse is true: they can turn motion into electrical energy.

The underlying science and physics behind touchscreens on iPhones is the concept of electricity, and specifically the way electricity passes through the human body and interacts with an inanimate object. Without electricity, heat could only be provided through a fireplace and light could only be provided through candles. In addition, all of today’s technologies is run on electricity. The formal definition of electricity is, “a form of energy resulting from the result of charged particles, either statically as an accumulation of charge, or dynamically as a current.” (XX). Our bodies also contain electricity; enabling technologies such as touch screens to function.

An electricity and magnetism phenomenon apparently unrelated to power are electrical magnetic fields. We are familiar with these forces through the interaction of compasses with the earth's magnetic field, or through fridge magnets or magnets on children's toys. Magnetic forces are explained in terms very similar to those used for electric forces:

Up until 1830’s it was difficult to measure the magnetic field of the earth quantitatively, due to there were no real standard to compare it against. Geologists in that era had difficulties on navigating from point A to point B [2]. As electromagnetic theory was industrialized through the 1800s, it was found that magnetic field strength could be given a definite value using coils which carries the current. In this EEi, the aim is to determine the measurement of the local magnetic field, comparing to a known value created by a coil known its size, current and turns. [1]

Magnetic repulsion works on the principle of using electro magnets to levitate objects. Unlike normal magnets, electro magnets are created by the movement of current through wires. This means that the strength of the magnet can be changed by increasing or decreasing the current in the wire. As well as this, it is possible to change the poles of the magnet. This is important as it allows the magnet to both push and pull depending on the current. Using the idea that north repels north and south repels south, if the ground were to have the same pole as the electric magnet, then the electric magnet would hover. This idea can better be seen in figure 1.