The term Helmholtz coils refers to a device for producing a region of nearly uniform magnetic field. It is named in honor of the German physicist Hermann von Helmholtz.
Description
A Helmholtz pair consists of two identical circular magnetic helmholtz coil coils that are placed symmetrically one on each side of the experimental helmholtz coil theory area along a common axis, and separated by a distance equal to the helmholtz coil arrangement radius of the coil. Actually a slightly larger separation improves the field uniformity. Each coil carries an equal electrical current flowing in the same direction. A cylindrical region extending walker scientific helmholtz coil triple axis between the centers of helmholtz coil equations the two coils and approximately 1/5 of their diameter will have a nearly spatially uniform magnetic field.
Mathematics
The calculation of the exact magnetic field has mathematical complexities and involves the study of Bessel functions. An approximate calculation gives the correct value at the center point. If the radius is R, the number of turns in each coil is n and the current flowing through the coils is I, then the magnetic field, B at the midpoint between the coils will be given by
- helmholtz coil diagram
Quadrupole Magnetic Field
This is a Magnetic Field produced by two electric coils; see for example: [[1]]
See Also
- Maxwell coil
External links
- On-Axis Field of an Ideal Helmholtz Coil
- Axial field of a real Helmholtz coil pair
Electronics Topics
The field of electronics is the study and use of systems that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. The design and construction of electronic circuits to solve practical problems is part of the fields of electronic engineering, and the hardware design side of computer engineering. The study of new semiconductor devices and their technology is sometimes considered as a branch of physics.
# - A | B | Co - Cz | C - Cm | D
Em - F | E - El | G - H | I - K | L - Ma
