Magnets and Electromagnets

1030 Words3 Pages
bulb-icon

Recommended: Application of magnetic in everyday life

Introduction

Magnets have existed for hundreds of thousands of years and have been used by many different cultures throughout this time. Magnets have been useful throughout the years because they can hold two things together just through the force of the metal in the magnet. With the world’s constantly changing technology, electromagnets have been evolved from magnets and are more useful than a regular magnet but in order for an electromagnet to work, an electric current needs to be present (http://saxonhomeschool.hmhco.com/ha/Resources/saxonhomeschool/Holt_ST_PhysSci_Samp.pdf). The following questions that need to be addressed when learning about magnets and electromagnets are:

1. What is a magnet?

2. What is the cause of magnetism?

2. What are the different kinds of magnets?

3. How are magnets beneficial?

4. What is an electromagnet?

5. How are electromagnets used today?

What is a magnet?

A magnet, defined in the Merriam-Webster dictionary, is classified as “a piece of iron (or an ore, alloy, or other material) that has its component atoms so ordered that the material exhibits properties of magnetism, such as attracting other iron-containing objects or aligning itself in an external magnetic field” (insert citation for google). This definition is saying that a magnet contains a magnetic field and it can attract other objects with like properties of that magnet so that they match up with one another creating a constant hold. Magnets were discovered over 2,000 years ago when the Greeks found a mineral that joined with like objects made of iron. This mineral was discovered in a city called Magnesia, so the Greeks named it magnetite (insert saxon citation).

What is the cause of magnetism?

“Some magnets can pic...

... middle of paper ...

...sources/HighSchool/Magnetism/magneticdomain.htm>.

9. "Magnets and Electromagnets." Hyper Physics. GSU, n.d. Web. 23 Sept. 2013. .

10. "Questions and Answers - What is an electromagnet?." Questions and Answers - What is an electromagnet?. N.p., n.d. Web. 12 Dec. 2013. .

11. Sandner, Lionel. What Is Electromagnetism? New York: Crabtree Pub., 2012. Print.

12. "Solenoids." Hyper Physics. GSU, n.d. Web. 23 Sept. 2013. .

13. Sumalla, Albert. Super-Charged Science Projects: Magnets and Electric Current. New York: Barron's, 1994. Print.

14. "Uses of Electromagnets." Universe Today RSS. N.p., n.d. Web. 12 Dec. 2013. .

Show More
Related

  • Achieving Magnet Status and Change

    1135 Words  | 3 Pages

    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.

    Read More

  • How to Become a Zoologist

    2030 Words  | 5 Pages

    "Zoologist Salary - How Much Does Zoologists Make?" The Richest We Follow Money The Extraordinary Zoologist Salary How Much Does Zoologists Make Comments. Web. 28 Mar. 2014.

    Read More

  • Electromagnetism

    702 Words  | 2 Pages

    Electric guitars are devices that generate sound from a set of pickups that convert string vibration into electrical signals for amplification. The sound starts out as vibrations the musician creates while playing. These vibrations are picked up by the pickups of the guitar. What are pickups? Pickups are permanent magnets wrapped around in a coil. Since the strings are made with a special material called ferromagnetic, they interact with the magnetic fields in the pickups and force electrons to move in the loop. Moving electrons can generate a signal that can be read by the amplifier.

    Read More

  • A Day in a Life: A Neurosurgeon’s Career

    1276 Words  | 3 Pages

    "What Does a Neurosurgeon Do?." What Does a Neurosurgeon Do?. N.p., n.d. Web. 31 Dec. 2013. .

    Read More

  • Description of Occupational Therapy Career

    1366 Words  | 3 Pages

    "What Is Occupational Therapy?" Occupational Therapy : What Is Occupational Therapy? N.p., n.d. Web. 03 Mar. 2014.

    Read More

  • Magnetism And Magnetism

    831 Words  | 2 Pages

    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...

    Read More

  • The Effect of the Number of Coils on an Electromagnet On Its Strength

    925 Words  | 2 Pages

    The Effect of the Number of Coils on an Electromagnet On Its Strength Aim: - To establish whether a variation in the number of coils will affect an electromagnet's strength. Scientific Knowledge -. The concept of electromagnets is fairly simple. An iron nail wrapped in a series of coils of insulated wire and then connected to a battery, will enable the nail to pick up paper clips. This is because the current emitted from the battery to the coils magnetizes the nail to the surface.

    Read More

  • MRI History

    1577 Words  | 4 Pages

    During the late 1970's, the world of diagnostic imaging changed drastically due to the introduction of Magnetic Resonance Imaging, also known as MRI. For over 30 years, they have grown to become one of the most significant imaging modalities found in the hospitals and clinics ("EDUCATIONAL OBJECTIVES AND FACULTY INFORMATION"). During its ancient days, these machines were referred to as NMRI machines or, “Nuclear Magnetic Resonance Imaging.” The term “nuclear” comes from the fact that the machine has the capability of imaging an atom's nucleus. Eventually, the term was dropped and replaced with just MRI, because “nuclear” did not sit well with the public view ("EDUCATIONAL OBJECTIVES AND FACULTY INFORMATION"). Many people interpreted the machine to produce an excess amount of radiation in comparison to the traditional X-ray machine. What many of them were unaware of, MRI does not disperse a single ounce of ionizing radiation making it one of the safest diagnostic imaging machine available to this date. MRI machines actually use strong magnetic fields and radio waves to produce high quality images consisting of precise details that cannot be seen on CT (Computed Tomography) or X-ray. The MRI magnet is capable of fabricating large and stable magnetic fields making it the most important and biggest component of MRI. The magnet in an MRI machine is measured on a unit called Tesla. While regular magnets commonly use a unit called gauss (1 Tesla = 10,000 gauss). Compared to Earth's magnetic field (0.5 gauss), the magnet in MRI is about 0.5 to 3.0 tesla range meaning it is immensely strong. The powerful magnetic fields of the machine has the ability to pull on any iron-containing objects and may cause them to abruptly move with great for...

    Read More

  • The Physics of an Electric Motor

    1615 Words  | 4 Pages

    A conductive atom’s valance shell is not completely full; electrons will flow from atom to atom because of this. When these electrons move from one atom to another, that is electrical current (a brief description of that is). A magnet can be made from different materials, but a loadstone is the natural form. The most important part of magnetism to make electric motors work is: A magnet has two different ends, or poles, a north and a south pole. These poles behave like electric charges, like poles repel and unlike poles attract although magnets have no effect on still charges.

    Read More

  • Sleep and Teenagers

    1024 Words  | 3 Pages

    "Adenosine - What Is Adenosine?" Adenosine - What Is Adenosine? N.p., n.d. Web. 09 Mar. 2014.

    Read More

  • Magnets

    837 Words  | 2 Pages

    The first time we know about magnets was in 1269, when a soldier named Peter Peregrinus, wrote a letter about everything that was known at that time about a stone called magnetite. It is reported that he was writing this when he was guarding the walls of Lucera, a small town in Italy. It is also reported that, “While people insi...

    Read More

  • Magnetic Field Essay

    801 Words  | 2 Pages

    Electric currents produce magnetic fields, they can be as small as macroscopic currents in wires, or microscopic currents in atomic orbits caused by electrons. The magnetic field B is described in terms of force on a moving charge in the Lorentz force law. The relationship of magnetic field and charges leads to many practical applications. Magnetic field sources are dipolar in nature, with a north and south magnetic pole. The magnetic field SI unit is the Tesla, it can be seen in the magnetic part of the Lorentz force law F magnetic = qvB composed of (Newton x second)/(Coulomb x meter). The smaller magnetic field unit is the

    Read More

  • Essay On Magnetic Field

    932 Words  | 2 Pages

    The Earth’s magnetic field is a major component to exploring the earth. The north and the south poles have always been a guide for travelers. Using compasses, the direction of the north pole and the south pole has always been provided by the magnetic force of the magnetic field. What many people do not know though is the earth’s magnetic field provides way more than that. The magnetic field, also known as the magnetosphere, protects us from all kinds of harmful substances. Some of these substances include solar wind and harmful radiation from the sun. The magnetosphere also protects the atmosphere, which protects us.

    Read More

  • Analysis Of The Tesla Coil

    806 Words  | 2 Pages

    The Tesla Coil was the innovation of a mad scientist experiment with electricity in 1891. This experiment sparked the innovation of inventions in our modern electrical grid. This innovation was created before the conventional iron-core transformer that was used to lighten systems and telephone circuits. The main concept behind the coil is actually fairly simple; this concept is actually fairly simple which uses electromagnetic and resonance force.

    Read More

  • Uses of Magnets in Everyday Life

    889 Words  | 2 Pages

    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.

    Read More

More about Magnets and Electromagnets

Open Document