The strongest magnetic field in the universe has potentially been discovered - a dead star that packs the equivalent mass of our sun into an area just 12 miles across. We have all probably had experiences with magnets at one time or another magnets attract certain types of material like iron but almost nothing else the term electromagnetism is defined as the production of a magnetic field by current flowing in a conductor. The magnetic state (or magnetic phase) of a material depends on temperature and other variables such as pressure and the applied magnetic field a material may exhibit more than one form of magnetism as these variables change.
In our article on magnetic fields we learned how moving charge surrounds itself with a magnetic field in this context the magnetic force is a force that arises due to interacting magnetic fields in this context the magnetic force is a force that arises due to interacting magnetic fields. We know the sun has a magnetic field several times stronger than earth's, but the moon has little or no magnetism the other planets have magnetic fields too saturn, jupiter, neptune, and uranus have fields stronger than earth's, while mars, mercury, and venus have weaker fields. As we know that current is present in our body and the stronger the current, the strong is the magnetic field this scanning technology is able to pick up the magnetic fields, and it can be easily identified where there is a great amount of electrical activity inside the body.
What we know as the magnetic north pole was at the geographic south pole, a million years ago this map shows how - starting about 789,000 years ago - the north pole wandered around antarctica. A simple question about magnets is just the start of some great science activities and fun, science-based pranks caution: don't allow the magnets to slam together you will be injured and the magnets may break in the collision it's time for some magnetic fun drop the magnet into the drink cup. The attraction known as magnetism occurs when a magnetic field is present, which is a field of force produced by a magnetic object or particle we now know that gravity works by distorting.
The magnetic field as we know it today is considered normal polarity although the discovery that the earth's magnetic field has reversed several times in the past seems enormous it true significance in history of continental drift will not be realized for more than 50 years. We do know that many animal species have some form of magnetoreception that enables them to sense the earth's magnetic field they may use this to assist in long-distance navigation during migration. What we know • current in a wire generates magnetic field • field of a solenoid is similar to that of a bar magnet • strength of magnetic field depends on permeability ( magnetic properties of magnet) • interaction between magnetic field and electric field results in a magnetic force ( as in electric motor) can a magnetic field induce a current in a wire. We took two samples of hard water, known to have a hardness of about 14 grains after passing one through a 3000+ gauss magnetic field, we heated the water to form scale. Now suppose you look at a bar magnet if you were to measure the magnetic field around the magnet you would find that the field has the same pattern and shape (well, just about the same) as the.
Does earth's magnetic field or solar activity influence the el nino cycle what do we know about earth's ancient magnetic field is it true that organic matter cannot pass through the van allen radiation belts. Now we know that among those planets, only venus lacks any magnetism the planets differ greatly in size and properties, and their fields differ too yet they all seem to have dynamo fields, or (in the case of mars and the moon) have had them in the past. Earth's magnetic field is shaped like the magnetic field of a gigantic bar magnet of course, there isn't really a huge bar magnet inside of earth notice how earth's north magnetic pole is actually the south pole of the magnetic field. The magnetic field of the earth is fairly weak on the surface after all, the planet earth is almost 8,000 miles in diameter, so the magnetic field has to travel a long way to affect your compass.
The honest answer is we do not know what a magnetic field is what we do know is that a magnet field is generated by the motion of electrostatic charges within the the magnet itself the electric charges being electrons. Magnetic fields are created when electric current flows: the greater the current, the stronger the magnetic field an electric field will exist even when there is no current flowing an electric field will exist even when there is no current flowing. If we're going to find any satisfaction in this gloomy vale of misery and mystery, we're going to have to take matters into our own hands and start again, from first principles on this day, this very hour, starting with the magnets holding my gym's yoga schedule to the creaking door of my filthy refrigerator, it begins.
Yes we do know why magnetism works it is a result of moving electrical charges it gan also be shown that applying relativistic analysis to moving charges creates the effects. We all knew the basics of magnets and magnetism -- magnets attract specific metals, and they have north and south poles opposite poles attract each other while like poles repel opposite poles attract each other while like poles repel. Gravity as we know it, is probably a complex thing, no primary basic element to learn more about gravity, we have to forget what we know from daily life, and zoom in on the situation force might be a primary basic element, but there's probably no magnetic force and gravity force.