Let’s Make a Compass

Draw a straight line that is to be the first side of the triangle. Set your compasses to the length of the first side, position them at one end of the line, and draw an arc. Move your compasses to the other end of the line, and draw an arc that crosses the first. The crossed arcs mark the final point of the triangle.

1. Step 1: Prepare the Compass Arm. Take the nail and push it through the string.
2. Step 2: Prepare the Center. Find where the center of the circle will be.
3. Step 3: Prepare the Drawing Swing. Lay a tape measure out, with the 0″ mark at the center of the circle.
4. Step 4: Draw the Circle.
5. Step 5: Reveal the Circle!

You can also do this with a bit of wire. Grab a leaf, or something light that will float, and place the needle on the leaf. Float it in a puddle of water, and you have yourself a makeshift compass.

Introduction. It is known that rubbing the needle from one end to the other end of a bar magnet can magnetize the needle. However, it is generally believed that one has to rub the needle many times to bring reasonable magnetization in it.

It’s composed of a magnetized needle that aligns itself with the earth’s magnetic field to point north. If you find yourself lost without a compass, you can easily make your own using a piece of magnetized metal and a bowl of water .

1. Cut off a small circle at one end of the cork (about ¼’ thick)
2. Securely grip the needle with the pliers and with the circle of cork on a flat surface, push the needle through one end of the cork and out the other so that the needle is sticking out of both ends of the cork evenly. ( Be careful)

Rub one end of the needle on one side of the magnet 30 times (the north pole if your magnet is labeled). Always rub in the same direction. Flip the magnet over and rub the other end of the needle on this other side 30 times. Again, rub in the same direction.

A compass is a device that indicates direction. It is one of the most important instruments for navigation. Magnetic compasses consist of a magnetized needle that is allowed to rotate so it lines up with the Earth’s magnetic field. The ends point to what are known as magnetic north and magnetic south.

A compass has a magnetic needle that can rotate freely. When a compass is kept at a place, the magnetic needle aligns in north-south direction. Red arrow of the compass needle is termed as north pole and the other end as south pole….Related Stories.

Solution: A compass has a magnetic needle that can rotate freely. When a compass is kept at a place, the magnetic needle aligns in a north-south direction. The red arrow of the compass needle is termed as the north pole and the other end as the south pole.

When another magnet is brought near a compass, then this magnet will attract or repel the magnetic needle of compass due to which the compass needle will be disturbed from its usual north-south direction. The compass needle will point in another direction.

The needle of a compass is itself a magnet, and thus the north pole of the magnet always points north, except when it is near a strong magnet. When you take the compass away from the bar magnet, it again points north. So, we can conclude that the north end of a compass is attracted to the south end of a magnet.

Bar magnet The compass needle is a small magnet. That’s why when a compass needle is brought near a bar magnet, its magnetic field lines interact with that of the bar magnet. Hence, a compass needle gets deflected near the magnet bar.

The magnetic field generated by any magnet is always strongest at either pole. The magnetic force is equally as strong at both the north and south pole.

magnetic pole

neodymium

Take two magnets put one North pole and one South pole on the middle of the iron. Draw them towards its ends, repeating the process several times. Take a steel bar, hold it vertically, and strike the end several times with a hammer, and it will become a permanent magnet.

Magnets are made by exposing ferromagnetic metals like iron and nickel to magnetic fields. There are three methods of making magnets: (1) Single touch method (2) Double touch method (3) Using electric current.

Alnico alloy: An iron alloy with aluminum, nickel and cobalt makes up Alnico alloy. Alnico alloys make strong permanent magnets.

Magnets are made from magnetic metals – iron, nickel and cobalt. These are the only pure metals that can be turned into a permanent magnet. In this situation they act as a magnet – but only whilst in the magnetic field. This is called induced magnetism.

The Use of Steel in Permanent Magnets In its natural state, steel isn’t magnetic, but it can be modified in a way that turns it magnetic. Steel isn’t the only material used to make permanent magnets. Permanent magnets are also made of ceramic, iron, cobalt, nickel, gadolinium and neodymium.

Steel contains iron, so a steel paperclip will be attracted to a magnet too. Most other metals, for example aluminium, copper and gold, are NOT magnetic. Two metals that aren’t magnetic are gold and silver.

Ferromagnetic materials, meaning materials that contain some degree of iron, can usually be permanently magnetized, with a catch: if magnets are heated to excessive, known temperatures, they can lose their magnetism. Electric motors are good examples of using magnets to convert electric energy into mechanical force.

Iron is paramagnetic above this temperature and only weakly attracted to a magnetic field. Magnetic materials consist of atoms with partially-filled electron shells. So, most magnetic materials are metals. Other magnetic elements include nickel and cobalt.