Magnetism

Oh, what a delightful question! The name of the 1200 French crusader you're thinking of is Peter Peregrinus. He was a wise soul who indeed shaved a magnet into a sphere and observed its poles, making important discoveries about magnetism. It's truly inspiring how curiosity can lead to such wonderful discoveries in this world.

Well, honey, gold may be fancy and all that jazz, but it's just not practical for plates. It's way too soft, so your fork and knife would leave marks all over it like a bad tattoo. Plus, it's a real show-off move to eat off gold plates - save that for the Kardashians. Stick to good ol' porcelain or stainless steel for your dining needs.

A piece of any magnetic material, like iron or steel (a nail, knitting needle, bolt etc.) is take and placed on a bench or a table. A bar magnet is brought close to the magnetic material (say an iron piece AB). One end of the bar magnet is stroked against it, moving from end A to end B of the iron piece. When the bar reached end B, it is lifted and the stroke is repeated from A to end B. This procedure is repeated several times, keeping two things in mind:

(a) The same pole of the bar magnet should be used every time

(b) Strokes should be in the same direction

By stroking the iron piece with the north pole of the bar magnet, end A becomes the North Pole, and end B the South Pole. If you bring the South Pole of any magnet close to end A now, what will you observe? You will observe that the two attract, which simply proves that end A acquires the North Pole.

Oh, dude, objects that are not attracted by magnets are basically like the cool kids who don't follow trends. We're talking about stuff like wood, plastic, glass, and most metals that are not ferromagnetic. So, if you're looking for something to play with your magnet, maybe stick to paper clips and fridge magnets, and leave the non-magnetic crew alone.

It was noticed that magnetizing a steel bar could be made easier by the use of the double touch method.

Procedure:

1.Place a steel bar on a flat surface. e.g a table

2.Then two strong bar magnets are struck on the steel bar with their opposite poles striking the steel bar on either side AB.e.g the north pole of one magnet strikes side A and the south pole of another magnet strikes side B.

3.The magnets are moved to the centre and when they reach the centre,they are taken back to their original places in a magnetic field of way.

4.This stroke is repeated for several times until A and B gain a polarity.

5.You will notice that A will get the opposite polarity as B.i.e A will become the south pole while B will become the north pole.

The dark spots on the surface of the Sun that represent areas of cooler temperatures are called sunspots. Sunspots are regions on the Sun's photosphere that appear dark because they are cooler than the surrounding areas, due to intense magnetic activity inhibiting convection. Sunspots are temporary phenomena that occur in cycles and can have significant effects on space weather and Earth's climate.

Every appliance that has a motor in it uses electromagnets. The only appliance that I can think of right now that does not use electromagnets in it is a toaster and a bus. I WANT A COOKIEAND A TOASTER

Nope, porcelain is about as magnetic as a rock. It's a ceramic material made from heating clay and other materials, not something that's going to stick to your fridge. Stick to using a magnet to hold up your grocery list, not your grandma's porcelain teacup.

The two forces acting on the paper cup are magnetic forces and gravitational forces. The repelling magnets create a magnetic force that pushes the cup away from them, while gravity pulls the cup downward towards the surface it is resting on. These two forces are in equilibrium when the cup remains in its position between the repelling magnets.

A magnet works by creating a magnetic field that attracts or repels other objects made of certain materials. This phenomenon is fascinating for kids to learn about because magnets have the ability to interact with objects without physically touching them, which seems like magic to young minds. Additionally, magnets are used in many everyday items, such as toys and electronics, making them a practical and interesting topic of study.

Magnets have invisible forces that attract or repel things. They have two ends called poles - a north pole and a south pole. Opposite poles attract each other, while the same poles repel each other. This is why magnets stick to some things but not others.

One way to explain the magic of magnets to preschoolers is by using simple language and engaging activities. You can show them how magnets attract certain objects like paper clips or coins, and how they can repel other magnets. Encourage them to explore and experiment with different objects to see what sticks to the magnet and what doesn't. You can also use magnetic toys or games to make learning about magnets more interactive and fun for preschoolers.

To effectively explain magnets to preschoolers, you can say that magnets are special objects that can stick to some things like metal. You can show them how magnets attract and repel each other, and let them explore with different objects to see what sticks. Make it fun by using magnetic toys or games to help them understand how magnets work.

this area represent the energy lost per cycle in ferromagnetic material during the magnetization process by hysteresis and in some cases also by eddy current

magnetic losses and electric losses

Oh, what a delightful question! Diamonds are not magnetic, but they sure do sparkle and shine in their own special way. Each gem has its own unique qualities, just like you do! Keep exploring and asking questions - the world is full of wonders waiting to be discovered.

Well, honey, when you put the north pole of one magnet next to the north pole of another magnet, they're gonna repel each other faster than you can say "get me outta here!" It's like trying to force two stubborn mules to kiss - it just ain't gonna happen. Those magnets are gonna push each other away like they're avoiding a bad blind date.

In William Golding's novel "Lord of the Flies," the other boys initially react with skepticism and disbelief to Piggy's assertion that the island they are stranded on is magnetic. They question Piggy's intelligence and mock him for his suggestion. However, as the story progresses, some of the boys begin to consider the possibility that there may be some truth to Piggy's statement, especially as they witness strange occurrences on the island.

The magnetic field is weakest at the ends of a magnet, known as the magnetic poles. The force is weaker at the edges and corners of the magnet due to the shape and distribution of magnetic domains within the material.

Well, darling, apart from iron, you might find a magnet getting cozy with nickel and cobalt. These metals have some magnetic properties that make them irresistible to magnets. So, if you're looking to spice up your magnetic collection, those are the ones to keep an eye on.

These stripes, often called Zebra Stripes due to the alternating colors of the original magnetometer readings when the first observations were made. It is directly related to two processes...geomagnetic reversals and seafloor spreading.

Seafloor spreading is easier to start with. Take the Mid-Atlantic Ridge running along the middle of the Atlantic Ocean. It is essentially a gap in the crust through which molten material from the mantle is pushed up through the crust. When it hits the water, the cold water rapidly cools it. As it continues to push out and harden, it very slowly pushes against the tectonic plates running along the ridge, causing them to spread apart. While they don't always run straight through the middle of an ocean, they will occur along plate boundaries. I've seen various maps showing tectonic plates that have arrows to show the direction of movement. Look for spreading ridges wherever you seen arrows pointed apart on these maps.

Now, as the molten material comes out and hardnes, small amounts of magnetic elements crystalize in the rock as it forms, oriented in the direction of the Earth's magnetic field. Consider current rocks forming as stripe 1.

Now, Earth's magnetic field fluctuates. This is normal and usually within small fluctuations. However, at times, it begins to break down. Eventually, when it does, it will rapidly flip over and a new magnetic field will begin to form in the reverse direction. This is Geomagnetic reversal. It used to be believed that it was quite random, though some scientists have argued that there is a pattern to it. It should also be noted that there isn't a specific time frame for how long they last or when they occur. Some will last for a few thousand years, some for a few tens of thousands of years, some for a few hundred thousand years. It varies quite a bit. We are still trying to understand this process, so we don't have definite answers as to what causes the whole process to work.

Now, go back to the seafloor spreading. As the spreading occurs, imagine that a reversal occurs. You begin to see rocks forming with those magnetic fields pointing the other way. Stripe 2. The next reversal will bring it back to what our field looks like now...making stripe 3. And so on. When is the next reversal going to happen...well we don' t have an exact answer. But one estimate puts it between 3000 and 4000 A.D., provided that the current evidence of deterioration continues and isn't a short term effect. Since this is all a relatively new concept, we honestly don't exactly what characteristics we will see when it begins to happen, making it hard to predict. At least not yet.

It should also be noted that the discovery of both seafloor spreading in the 1960's and geomagnetic reversals a bit earlier than that were the major pieces of evidence used to prove the theory of plate tectonics.

Oh, dude, if you try to stick two north pole magnets together, they'll totally repel each other like exes at a high school reunion. It's like a force field of "nope, not today." So, yeah, they'll just push away from each other faster than I run from responsibilities.

A natural magnet is called a lodestone because of the Old English word "lād-stān", meaning "leading stone", due to its ability to attract iron. In the past, lodestones were used for navigation since they would align themselves with the Earth's magnetic field and point north.

Earths magnetic orientation is locked into the rock when the rock cools

The two unlike poles on a magnet are the north pole and the south pole. These poles are where the magnetic field lines converge (north pole) or diverge (south pole). Opposite poles attract each other, while like poles repel each other due to the orientation of the magnetic field lines. This fundamental property of magnets is crucial in understanding magnetic interactions and applications in various fields such as physics, engineering, and technology.