An electromagnet can be constructed by wrapping an iron or steel bar with a current-carrying wire. When used as the core of an electromagnet, the ferromagnetic properties of iron or steel allow the magnetic domains to align. Wrapping a nail or other steel item with insulated wire, which is then hooked up to an electrical current, will magnetize the core. When powered, electromagnets function just like permanent magnets.Know More
The first electromagnet was invented in 1820. The simple physics governing electromagnetism allows anyone to construct such a magnet using common everyday items. A large iron or steel nail, at least 3 inches or longer, makes a suitable core for a simple electromagnet. Household D-size batteries produce an electrical current that is strong enough to create an operational magnet. Tightly wrapping the nail or other object with coated or insulated copper wire and ensuring the ends are exposed and able to be connected to the battery is all that is required.
Once the wire is attached to a power source and current is passed through it, the core becomes magnetized and will possess enough force to attract certain types of metals. Once disconnected from its power source, an electromagnet will no longer function.Learn more in Magnetism
A weak magnet becomes stronger when it is rubbed with a strong magnet for several minutes. The strong magnet must be rubbed in only one direction. This procedure does not weaken the stronger magnet.Full Answer >
Kids can easily make an electromagnet using nothing more than 5 feet of copper wire, a large iron nail, a rubber band, sandpaper and an AA battery. These objects are readily available around the house, and there are few risks associated with making a small electromagnet. Making electromagnets will allow children to see basic science concepts in person.Full Answer >
A lattice fence can be constructed from lattice paneling. A lattice fence creates a fenced-in area that is semi-private due to the lattice design.Full Answer >
Wedding tablecloths are constructed by choosing fabric, cutting it to meet the measurements of the tables, and sewing the end seams for a ripple or flowing effect. Begin by measuring the tables, round or rectangular, to ensure you have enough fabric. Most round tables are 48 inches, so a 108-inch piece of fabric will cover the area.Full Answer >