{"id":7418,"date":"2018-03-26T08:08:26","date_gmt":"2018-03-26T08:08:26","guid":{"rendered":"https:\/\/www.experimentoscientificos.es\/?page_id=7418"},"modified":"2018-03-26T15:15:05","modified_gmt":"2018-03-26T15:15:05","slug":"campo-magnetico","status":"publish","type":"page","link":"https:\/\/www.experimentoscientificos.es\/en\/campo-magnetico\/","title":{"rendered":"Magnetic field"},"content":{"rendered":"

WHAT IS A MAGNETIC FIELD<\/h2>\n

\u00a0A\u00a0magnetic field<\/span>\u00a0is defined by the region of space where magnetic forces are present. Magnetic forces are forces that attract or repel metals. a region of space where magnetic forces exist, forces that attract or repel metals.<\/p>\n

In general terms, the magnetic field can be defined as\u00a0a non-visible field that exerts a magnetic force on objects that are sensitive to magnetism<\/strong>.<\/p>\n

Objects that generate magnetic fields, such as magnets, have two poles, pole North (N) and South Pole (S)<\/strong>. Magnetic poles can be found at the extremes of the field. If we have two different fields,\u00a0their opposite poles will cause them to attract and their equal poles will cause the two fields to separate.<\/strong>. Not only magnets generate magnetic fields, but also, for example, magnet currents, as we will see below.<\/p>\n

The way to represent the magnetic field and the direction of the forces is through the magnetic field lines<\/a>. These lines of force determine the direction in which the magnetic force acts and the area that is attracted by the action of the magnetic field. The Earth also has a magnetic North Pole and a South Pole. They do not coincide exactly with the geographic North Pole and South Pole, since each year these poles undergo a deviation, but almost. It is thanks to this magnetic North Pole and South Pole that compasses work. This deviation is defined in the reading of maps for ship navigation. The earth's magnetic field protects us from solar radiation.<\/p>\n

\"\"<\/p>\n

 <\/p>\n

A good understanding of magnetic lines and magnetic fields is very important in order to be able to determine the operation of generators, motors and virtually all electrical machines.<\/p>\n

MAGNETIC FIELD EXPERIMENTS<\/h2>\n
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First Electric Generator<\/a><\/h3><\/div>\n\n<\/strong> In this experiment, you can see how a magnet slows down as it falls through a copper tube. Copper has no magnetic properties and brakes due to the Faraday-Lenz law. <\/div>\n\n<\/div>\n
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Magnetic Field Lines Experiment<\/a><\/h3><\/div>\n\n<\/strong> Magnetic field lines. With just a magnet and some iron filings you will be able to see how magnetic field lines behave. <\/div>\n\n<\/div>\n
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HOW A MAGNETIC FIELD IS GENERATED<\/h2>\n

There are 2 ways to generate a magnetic field:<\/p>\n

    \n
  • Magnets.<\/strong> A magnet is an element that in itself possesses magnetic properties. There are magnets\u00a0natural as well as<\/b>\u00a0magnetite is a powerful natural magnet, it has the property of attracting all magnetic objects. Magnetic objects are those that are attracted to magnetite. There are also Permanent artificial magnets<\/b>are magnetic objects which, when rubbed with magnetite, become magnets,<\/li>\n
  • Temporary artificial magnets<\/b>The magnetic field is produced only when an electric current flows through them. An example is the\u00a0electromagnet<\/b>.\u00a0If an electric current is passed through the conductor, a magnetic field is generated around the wire coil.<\/strong>. This can be seen by placing a piece of metal (a point for example) near the coil. We will see how it is attracted by the electromagnet.<\/li>\n<\/ul>\n

    \"electroiman\"<\/p>\n

    In conclusion, a magnet or an electric current is needed to create a magnetic field.<\/p>\n

    MATERIALS ATTRACTED BY MAGNETIC FIELDS<\/h2>\n

    The\u00a0ferromagnetic<\/strong>\u00a0are strongly attracted by the\u00a0magnets<\/strong>. These include nickel, iron and steel alloys among others. These metals are the most commonly used to make permanent magnets.<\/p>\n

    The\u00a0paramagnetic<\/strong>\u00a0are weakly attracted by a magnetic force. This force is a million times weaker than that which attracts ferromagnets. Paramagnetic metals are copper, aluminium and the transition elements.<\/p>\n

    In contrast to ferromagnetic and paramagnetic metals, the\u00a0diamagnetic<\/strong>\u00a0respond to magnets by inducing an opposing magnetic field. Examples of these are carbon graphite, gold, silver, lead and bismuth.<\/p>","protected":false},"excerpt":{"rendered":"

    WHAT IS A MAGNETIC FIELD A magnetic field is defined by the area of space where magnetic forces are present. Magnetic forces are forces that attract or repel metals. a region of space where magnetic forces exist, forces that attract or repel metals. In general terms, the magnetic field can be defined as a non-visible field that attracts or repels metals.<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"acf":[],"yoast_head":"\nCampo Magn\u00e9tico<\/title>\n<meta name=\"description\" content=\"El campo magn\u00e9tico es la zona del espacio donde est\u00e1n actuando fuerzas magn\u00e9ticas. 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