A magnetic field is a physical phenomenon that is produced by a magnetic source, such as an electric current, or a moving charged particle, such as an electron. The magnetic field is a vector field that exerts a force on other moving charges or magnets and is represented by the symbol B. The strength and …
How does the magnetisation occur? Magnetisation is the process by which a material acquires a magnetic field. It occurs when the magnetic dipoles in a material, such as atoms or molecules, align themselves with an external magnetic field. This alignment of dipoles creates a net magnetic field within the material, which is known as magnetisation. …
Earth is a giant magnet, with its own magnetic field. It is believed that this magnetic field is generated by the churning of the planet’s liquid-iron core, which creates electric currents that in turn produce the field. Its magnetic field protects us from charged particles from the sun and other sources in space. These particles, …
The bar magnet is suspended on a string because it is in a magnetic field. The magnetic field causes the magnet to align itself with the magnetic field lines, which are oriented in the north-south direction. The magnet cannot move in any other direction because the magnetic field lines are not oriented in any other …
write down the method adopted by in ancient times by sailors on ships and travellers in the desert to reach their destination? 1. Celestial Navigation: This method used the position of the stars, sun and moon to determine the direction of travel. 2. Dead Reckoning: This method used the ship’s speed and direction to estimate …
A magnetic compass is a navigational instrument used to determine direction relative to the Earth’s magnetic poles. It consists of a magnetized pointer (usually marked on the North end) free to rotate on a pivot, making it possible to align itself with the Earth’s magnetic field. It is one of the oldest navigational tools, used …
Maglev trains use magnetic levitation to suspend, guide and propel vehicles with magnets rather than using mechanical methods, such as wheels, axles and bearings. This form of transportation is still in its early stages, but it has the potential to revolutionize the way people travel. The technology is based on the principle of magnetic repulsion …
A lodestone is a naturally magnetized piece of the mineral magnetite. It is a form of iron oxide with strong magnetic properties that it has possessed naturally since its creation by natural processes. It was used as an early form of a compass by the Chinese in the Han Dynasty and was widely used in …
Nature Magnet: Nature magnetic fields are created by the Earth’s core, which is composed of iron and nickel. These fields are naturally occurring and very weak. Artificial Magnet: Artificial magnetic fields are created by man-made objects like magnets. They are much stronger than natural magnetic fields, and can be used for a variety of purposes …
Nature magnet and Artificial magnet – സ്വാഭാവികകാന്തങ്ങളും കൃത്രിമകാന്തങ്ങളും Read More »
1. Magnetic Resonance Imaging (MRI): MRI uses strong magnetic fields and radio waves to create detailed images of the organs and tissues inside the body. 2. Hall Effect: This experiment is used to measure the strength and direction of a magnetic field by using a thin metal plate. 3. NMR Spectroscopy: This experiment is used …
The experiment using by magnet – കാന്തം ഉപയോഗിച്ചുള്ള പരീക്ഷണങ്ങൾ Read More »