Galvanometer

**Galvanometer** is a measuring device capable of reacting abruptly to small changes in magnetic flux from the magnetic circuit being measured.

Description of the galvanometer: The galvometer was invented by a famous scientist known for his scientific discoveries. The device was created from a copper coil with a wound wire. With this device it was possible to detect minor changes. The creation process itself was quite simple. The device consisted of two elements: a coil and a wire. Thanks to the coil, which had a current around it, it was possible to check the frequency of the magnetic field. But the advantage of the device is that it could be used to test even weak magnetic fields. However, the mechanism itself did not function without an external power source. The device began to be in great demand, which at one time led to the creation of electric generators.

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A galvanometer is a measuring instrument that is used to measure and control electrical currents. It is widely used in various industrial fields, including electrical engineering, electronics and medicine.

The principle of operation of a galvanometer is based on measuring the current passing through a conductor. The device consists of a coil, which is located inside the housing and is part of the circuit, as well as a galvanic element that provides the electric field. When current passes through the coil, it begins to rotate, which causes its position to change relative to the magnet inside the galvanic cell. The change in the position of the coil is transmitted to the scale of the measuring device, and from it the magnitude of the measured current can be determined.

In medicine, galvanometers are used to measure the amplitude and frequency of the body's bioelectric potentials, which make it possible to diagnose various diseases and monitor their course and treatment. They can also be used to control the quality of medicines and other medical procedures.

Despite their high accuracy and reliability, galvanometers have their drawbacks. First of all, they are extremely sensitive to external electromagnetic fields. In addition, measurement accuracy may be reduced when the rotation speed of the coil changes due to bearing wear or uneven wear of the magnet and coil stator. Therefore, when measuring electric current, it is necessary to avoid exposure to strong magnetic fields and use special shielding devices.