When you were young, you may have remembered about trying to make objects stick together or move things, like metal paperclips, just by using a magnet. Back then, you probably thought that magnets’ only exist as play things. But, now that you’re older, you’ve realised that these objects play a significant role in day-to-day life.
In fact, everything that works around you makes use of the magnetic field. Although you cannot see it, you can be aware of it if you observe your surroundings. Magnets can be found in the simplest or the most complex devices you employ every day. From your home appliances like refrigerator, microwave oven and electric fan, to your business office equipment like computers and printers—all of these devices make use of magnets.
What is a magnet?
A magnet is a solid object, usually made of metal iron, which has the ability to attract other materials (e.g., iron, steel, cobalt and nickel) within a magnetic field.
How Magnets Work
A magnet has an invisible field that forces other objects to respond to its properties. This powerful force, which is referred to as the magnetic field, has particles called electrons that actively shift and move within the field. These electrons constantly revolve around the poles, thereby creating energy that attracts objects. Because of this, a magnet has the ability to draw objects towards itself. This ability, which is called magnetism, is caused by the force field that magnets create through its protons (positive charge) and electrons (negative charge).
The Two Poles
A magnet also has two poles, called the north pole and the south pole. Although these poles appear the same, they act differently. If two magnets are close together, you’ll observe that unlike poles attract each...
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...placing a soft metal core (commonly an iron alloy) inside a coil of wire through which electric current passes in order to produce a magnetic field. The strength and polarity of the magnetic field changes depending on the magnitude of the current flowing through the wire and the direction of the current flow. While there is sufficient flow of current, the core behaves like a magnet; however, as soon as the current stops, the magnetic properties also disappear. Modern devices that make use of electromagnets are the televisions, telephones, computers and electric motors.
Bottom Line
The various types of magnets are used in countless facets in everyday life. Thousands of industries, including automotive, electronics, aerospace, craft, manufacturing, printing, therapeutic and mining utilise magnets so that their machineries, tools and equipment can properly function.
In the twentieth century the medical field has seen many changes. One way that hospitals and nursing specifically has changed and implemented the changes is by pursuing accreditations, awards, and recognitions. The purpose of this paper is to understand Magnet Status and the change required by hospitals to achieve it.
For hospitals to reach their peak in the healthcare world they must work to achieve a prestigious credential by the American Nurse's Credentialing Center ( Truth about nursing). In order to receive such a credential, hospitals must fulfill a set of criteria that will take a lot of work and reform within the hospital itself. To receive magnet status hospitals have to express the fourteen forces of magnetism along with the strict list of requirements (Flores, 2007). Magnet status along with everything has its benefits along with its problems. This credential has been researched in depth, and some research feels that certain thing should be changed in order for magnet hospitals to be the best they can possible be. Lastly, there is no doubt that magnet status is of great value because of how it transforms hospitals from great to greater.
Magnetism is very useful in our daily life. A magnetic field is a mathematical description of the magnetic influence of electric currents and magnetic materials. In addition, magnetic field is a region which a magnetic material experiences a force as the result of the presence of a magnet or a current carrying conductor. Current carrying conductors also known as wire. As we know there have north pole and south pole of a magnet. If same pole of magnet approaches each other, there will repel each other. In contrast, if different pole of magnet approaches each other, they will attract. These are same with the electric charge, if same charge it will repel, different charge it will attract. Although magnets and magnetism were known much earlier, the study of magnetic fields began in 1269 when French scholar Petrus Peregrinus de Maricourt mapped out the magnetic field on the surface of a spherical magnet using iron needles [search from Wikipedia]. Noting that the resulting field lines crossed at two points he named those points 'poles' in analogy to Earth's poles. Each magnet has its own magnetic field which experiences a force as the result of the presence of a magnet and magnetic field has made up of magnetic field lines. The properties of magnetic field lines is it begin at the north pole and end at the south pole. The north pole always flow out while south pole always flow in. The closer the magnetic field lines, the strength of magnetic field increases. Furthermore, these line cannot cross each other. Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. Ferromagnetic materials...
A magnetar is a kind of neutron star with one of the strongest magnetic fields detected in the Universe. Many stars have magnetic fields, but that by itself does not distinguish as magnetar from other stars. The distinguishing characteristic of magnetars is their extraordinarily intense magnetic fields that range between ~1014 and ~1015 Gauss (G) making them hundreds to thousands of times stronger than pulsars and among the strongest magnetic fields ever observed (Tiengo & Schartel, 2013). Explained another way ~1015 is equal to ~1011 tesla; or a magnetic field so strong that if the Moon possessed that magnetic field, the magnetic stripe on all credit cards would be stripped clean (Tate, 2010). That still might be challenging to comprehend. However, the strongest permanent magnet on Earth is approximately 1 Tesla compared to a magnetar with at least 100 billion times that strength (Tate, 2010).
This is known as an electromagnet. The current passing through an electromagnet produces a magnetic field. Therefore, the more turns of the coil you have, the greater the magnetic field. and the stronger the electromagnet. This will mean more paper clips.
The force of a magnet is caused by the magnetic field around the magnet. A magnets gets its magnetic field from moving electric charges. Everything is made up of atoms in the world and atoms have electrons that orbit around them. They create a small magnetic field. The electrons move in different directions so they cancel themselves out, but if you get them going in the same direction
Magnetism is a force that is created by electric current that is most likely caused by the moving electrons.
The History of Magnets and Electromagents Magnets and electromagnets have many uses, every electric motor,
As current flows through the wire, a magnetic field is created around the wire. Figure 2 shows the circular shape of the magnetic field around the wire as if you were able to look down the end of the wire. The magnetic field itself is invisible, but the magnetic field strength can be measured through the use of special equipment. The magnetic field weakens the further you move away from the wire and will always be perpendicular to the wire and the fields direction depends on the which direction the current if flowing. Since the magnetic field is always circular and perpendicular to the wire, the magnetic field can be increased simply by creating a coil of wire. Figure 3 shows an example of a simple electromagnet by coiling a wire around a nail and connecting it to a power source. The magnetic field is amplified by each loop of wire around the nail.
Temperature has a large effect on particles. Heat makes particles energized causing them to spread out and bounce around. Inversely the cold causes particles to clump together and become denser. These changes greatly F magnetic the state of substances and can also influence the strength of magnetic fields. This is because it can alter the flow of electrons through the magnet.
The microstructures of the two typed magnets were shown in Fig.1. It was found that the microstructure of Type II magnet is superior to that of Type I magnet. On the other hand, Type II magnet exhibits better wettability between main phase and grain-boundary phase than that of Type I magnet. The RE-rich phases of Type II magnet have more continuous and uniform distribution (red regions in Fig.1 (b)). In contrast, this kind of situation is rarely appear in Type I magnet. It is precisely because of the optimization of grain-boundary, the magnetic properties of Type II magnet were improved slightly.
One of the major and most known machinery that uses magnetism is a compass. Initially, the compass functions due to the fact that
When a ferromagnetic material is magnetized in one direction, it will not relax back to zero magnetization when the imposed magnetizing field is removed. It must be driven back to zero by a field in the opposite direction. If an alternating magnetic field is applied to the material, its magnetization will trace out a loop called a hysteresis loop. The lack of retraceability of the magnetization curve is the property called hysteresis and it is related to the existence of magnetic domains in the material.
The main use of the maglev train is to transport people from one place to another using magnets and electricity .The maglev train is made up of a lot of electromagnets
An electromagnet is a magnet that is powered by electricity. Electromagnetism can be found in our daily lives. Driving to school or work? An electromagnet can be found in the cars’ engine. Hungry and want a snack? Electromagnets can be found in blenders, microwaves, ovens, toasters, toaster ovens, dishwashers, and electric can openers. Need to do your hair? Hair dryers, straighteners, and curling irons all have electromagnets in them. Electromagnets can also be found in junk yards on the cranes that pick up cars, electric bells, loudspeakers, tape recorders, VCRs, hard disks, particle accelerators, magnetic locks, drills, speakers, radios, microphones, doorbells, trains, generators, relays, and sorting out metal in junk yards. The electromagnet is a very useful item and can range too many different power levels. Electromagnetism is the magnetic force produced by an electric current. Electromagnetism is very useful, but also harmful.