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Lab I - Electromagnet
Lab I - Electromagnet

... In this lab we are going to make a electromagnet which is a type of magnet where the magnetic field is produced by the flow of electric current. Electromagnets have many applications and we find them in almost every electrical devices, such as motors, generators, loudspeakers, hard disks, scientific ...
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Induced electric fields

... Nonelectrostatic electric fields ...
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Plasma in ionosphere

... atmosphere, to explain the daily variations in the Earth’s magnetic field. In 1902 Kennelly and Heaviside proposed a same hypothesis to explain Marconi’s successful transatlantic radio communication. For a long time ago, this conducting layer was called Kennelly-Heaviside layer. This hypothesis was ...
lec1_2008 - Stanford Solar Physics
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... The radio spectrum begins at   1 nm. The energy is often given per unit frequency rather than per unit wavelength. For quiet Sun it continues smoothly from the infrared. Discovered in 1942. ...
Errors and Limitations of the Magnetic Compass
Errors and Limitations of the Magnetic Compass

... It has already been explained that secular variation arises from slow movements of the current system in the Earth's core. In addition to secular variation there are more rapid variations with time, which originate in the "external field". This field originates from electric currents flowing in the ...
Electromagnetic Fields Health Effects
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... anything that is plugged in and turned on. Turning the appliance on causes current to flow, which generates the magnetic field. The strength of the magnetic field generated depends on how much current is flowing. The current flowing in your toaster is a constant amount, but the current flowing in a ...
Magnetic Properties - Help, Science!
Magnetic Properties - Help, Science!

... most DC generators reverse the locations of the magnets and coils from where they are in an AC generator. • Since the rotor, instead of a magnet, spins in a DC generator, a means of drawing off the current induced in the rotor coils is provided by a split-ring commutator instead of a stator as in an ...
File - Help, Science!
File - Help, Science!

... most DC generators reverse the locations of the magnets and coils from where they are in an AC generator. • Since the rotor, instead of a magnet, spins in a DC generator, a means of drawing off the current induced in the rotor coils is provided by a split-ring commutator instead of a stator as in an ...
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... Here we use the fourth component as the factor, which is related to the topographic element density on the surface, represented as a cartographic map. The magnetic field is calculated using the MCD-method proposed by Gerth and Glagolevskij (2000, 2001). Nevertheless, this is not the only possible wa ...
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2 - BYU Physics and Astronomy

2 - BYU Physics and Astronomy
2 - BYU Physics and Astronomy

... magnetic flux density in gauss. Into how many distinguishable Zeeman components does the spectral line associated with the two terms split? (3½ points, 1 for depiction of transitions, also see figure above) (e) Draw to scale the appearance of the Zeeman-split spectral line in emission. Indicate the ...
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... Other series were then discovered, e.g. Lyman with the first fraction 1/12 and Paschen with the first fraction 1/32. However, this only worked for hydrogen and atoms with one electron, e.g. ionised helium, and moreover did not provide any theoretical reason why the formula should work. In 1913 Bohr ...
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... Sun, travel through the main body called it interior interior.. They travel a zigzag path on their way out, as they are scattered back and forth by particles (mostly electrons). So many interactions occur that it literally takes occur, hundreds of thousands of years for a typical photon to travel fr ...
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B - college physics

... Click to see each of the following: Effective current of electrons Magnetic force on electron Charge separation in rod Orientation of electric field Electric force on electrons ...
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Current Systems in Planetary Magnetospheres and Ionospheres

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... wavelength, and vice versa. λ= ...
Physical Science: Unit 8: Sound
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... It’s possible for the flow of electrical current to lead to a dead end. • Building and releasing static charges or charging and discharging a battery can lead to filled capacity or use up available electrons. • Electric currents that provide a continuous push to keep the electrons flowing are useful ...
Magnetic Magic Teacher Guide
Magnetic Magic Teacher Guide

... you be able to find it? Only if you know the magic number! That number is the declination. It is the difference between true or geographic north, and magnetic north. And it is the number that Dena didn’t know in Magnetic Magic. That’s why she couldn’t find the treasure. Why is that number important? ...
The Magnetic Vector Potential
The Magnetic Vector Potential

... because of its analogous function to the electric scalar potential V ( r ) . An electric field can be determined by taking the gradient of the electric potential, just as the magnetic flux density can be determined by taking the curl of the magnetic potential: E ( r ) = −∇V ( r ) ...
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Aurora



An aurora is a natural light display in the sky, predominantly seen in the high latitude (Arctic and Antarctic) regions. Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind that the trajectories of charged particles in both solar wind and magnetospheric plasma, mainly in the form of electrons and protons, precipitate them into the upper atmosphere (thermosphere/exosphere), where their energy is lost. The resulting ionization and excitation of atmospheric constituents emits light of varying colour and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere. Proton auroras are usually observed at lower latitudes. Different aspects of an aurora are elaborated in various sections below.
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