Physics

Magnetometer Definition Magnetometer is an instrument for measuring the magnitude and direction of a magnetic field. Magnetometers are often used in archaeological and geological investigations…

Torque Definition Torque is the tendency of a force applied to an object to make it rotate about an axis. It is also a vector…

Electric Motor Definition Electric motor is a device that converts electrical energy to mechanical torque. In other words, the devices which produce rotational force are…

About Electric Generator Definition Electric Generator is a machine that converts mechanical energy to electric energy. It is a device that converts motive power into…

About Ampere Definition Ampere is the basic unit of electrical current in the International System of Units (SI), equivalent to one coulomb per second. It…

Alnico Definition Alnico is a powerful permanent-magnet alloy containing iron, nickel, aluminum, and one or more of the elements cobalt, copper, and titanium. Alnico alloys…

Magnetic Storage Definition Magnetic storage is a form of non-volatile storage. It is the manipulation of magnetic fields on a medium in order to record…

Pulsar Definition Pulsar is A rapidly spinning neutron star that emits radiation, usually radio waves, in narrow beams focused by the star’s powerful magnetic field…

Radio Telescope Definition Radio Telescope is an instrument that consists of a radio receiver and antenna system mounted on a wide, bowl-shaped reflector, used to…

About Radio Frequency Definition Radio Frequency (RF) is a frequency or band of frequencies that lie in the range 10 kilohertz to 300 000 megahertz…

About Radio Astronomy Definition Radio astronomy is the study of celestial objects by measurement of the radio waves they emit. It has enabled the detection…

Sunspot Definition Sunspots are easily recognized as speckles on the surface of the sun. Sunspots appear dark because they are cooler, by up to 1,500°K,…