Advantages And Disadvantages Of Magnetic Field

Electromagnetic Radiation – A form of energy composed of waves of electric and magnetic changes (from electrically charged particles). It deals with

They also say that the magnet’s energy has been described as a catalyst, which speeds up biological processes and enables the body to heal itself and ease pain. This catalyst stimulates blood circulation, allowing more oxygen to be distributed all over the body. (3)

Electrons circling an atom set up small magnetic fields. In most materials, these fields are aligned in a fairly random manner, so that all of these small fields cancel each other. In a magnet, however, these fields line up to create a net magnetic dipole, so that the object sets up a magnetic field in the surrounding space.

Equation 1 below shows the relationship of force (F), current (i), length (L), magnetic field (B), and angle (Ɵ) for a current carrying wire. In this experiment, the angle between the wire and the magnets is 90⁰. This means that sinƟ=1 and can be eliminated.

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

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.

With cell phone usage increasing, many individuals have become concerned about the health effects of radiation from cell phones and cell phone towers. In recent years, various studies have been conducted to determine whether the radio frequency waves from cell phone towers have a detrimental effect on health. Current research has yielded inconsistent results regarding the effects of radio frequency waves, and while the World Health Organization does not view radio frequency waves as serious risk, more research needs to be done in order to be certain (USDA, 2009).

The concept of an MRI machine originated back in 1952, when the American physicist Herman Carr published a thesis with Harvard University sharing his findings on Magnetic Imagining, and proposed a rudimentary idea for a once dimensional magnetic imaging machine.1 Over the next 20 years, his initial ideas were developed by researchers, who proposed the idea of ‘NMR’, or nuclear

A magnetic field is an area in which there is an electrical charge where a magnetic force acts. A magnetic field can be induced in a circular loop and it can be calculated if the radius, current, and number of turns are all known. When in the form of a coil it is directed along the axis of the coil and is usually uniform throughout the coil until it begins to fall off when it gets further away from the center. Another characteristic of magnetic field is that it can be changed to induce a voltage. That induced voltage is known as the magnetic flux and it can be calculated by knowing the area of the coil and the value of the magnetic field going through the coil.

Studies from Karato (1993) implies the magnetic field may relate to the magnetizing properties of iron. No matter how the Earth’s magnetic field was formed, it “prevents the atmosphere being stripped away by the solar wind” (Staff, 2010).

Magnetic and electric fields are intertwined. An electric charge at rest results in the creation of an electric field, which exerts a force on any other charge

The magnetic field are also produced by the moving electric charges. Electric and magnetic fields are two interrelated fields.

In the other hand there is a lot of disadvantages of lightning that affect our body and lives like:

Our world is powered by electricity; it surrounds us in every turn and every corner, powering our streetlights, our TVs, our hospitals, our homes, and our communities. Electricity is a form of energy that results from charged particles. There are many energy sources that can be converted into electricity, and that’s why it is suited for powering our society. We can generate electricity from burning fuels, energy of falling water, solar energy, and basically anything that has energy. Electricity is also easy to distribute, using transmission lines connecting the energy power station to homes, schools and so on. Atoms consist of electric charge, so electric charge is everywhere and the electric charge has an electric field. An electric field can only be created by a positive charge and destroyed by a negative charge(Brightstorm, 2010). According to Bob emery, owner of senior physics website, to generate electric power it requires motion between a magnetic field and a conductor. Attraction of a magnet is limited to certain boundaries this is called the magnetic field of a magnet (Makemegenius, 2013).

Much like electric fields, the magnetic field of an object can attract or push away another magnetic object.