Magnetism Notes
... magnet to establish a field where an electromagnet is made to rotate – When connected to a battery, the electromagnet will rotate one half turn – Its south pole will align with the north pole of the permanent magnet ...
... magnet to establish a field where an electromagnet is made to rotate – When connected to a battery, the electromagnet will rotate one half turn – Its south pole will align with the north pole of the permanent magnet ...
Level 4 - PO 417-1-A
... Unfortunately, the magnetic poles do not coincide with the geographic poles. Furthermore, magnetic north changes position a little every year. Averaged over thousands of years, the position of magnetic north will roughly correspond with true north, but at any given time the two poles can be very far ...
... Unfortunately, the magnetic poles do not coincide with the geographic poles. Furthermore, magnetic north changes position a little every year. Averaged over thousands of years, the position of magnetic north will roughly correspond with true north, but at any given time the two poles can be very far ...
Cosmic Radiation
... has recently taken on a more important and somewhat urgent role to that of simple academic curiosity. It involves the conquest of Space. As we have noted already, outside the safety of the Earth's atmosphere is a constant 'rain' of charged particles that can easily penetrate many grams of thickness ...
... has recently taken on a more important and somewhat urgent role to that of simple academic curiosity. It involves the conquest of Space. As we have noted already, outside the safety of the Earth's atmosphere is a constant 'rain' of charged particles that can easily penetrate many grams of thickness ...
Magnetism
... can be detected. Magnetic field lines show the direction and strength of a magnetic field. The lines are drawn point away from the north pole and towards the south pole. Magnetic field strength (B) is measured in Teslas. ...
... can be detected. Magnetic field lines show the direction and strength of a magnetic field. The lines are drawn point away from the north pole and towards the south pole. Magnetic field strength (B) is measured in Teslas. ...
Unit 5 sun and star formation
... and release huge amounts of X-rays. Coronal Mass Ejections (CMEs) – twisted magnetic field lines relax and release huge amounts of plasma (up to 4 million mph). ...
... and release huge amounts of X-rays. Coronal Mass Ejections (CMEs) – twisted magnetic field lines relax and release huge amounts of plasma (up to 4 million mph). ...
Van Allen radiation belt
A radiation belt is a layer of energetic charged particles that is held in place around a magnetized planet, such as the Earth, by the planet's magnetic field. The Earth has two such belts and sometimes others may be temporarily created. The discovery of the belts is credited to James Van Allen and as a result the Earth's belts bear his name. The main belts extend from an altitude of about 1,000 to 60,000 kilometers above the surface in which region radiation levels vary. Most of the particles that form the belts are thought to come from solar wind and other particles by cosmic rays. The belts are located in the inner region of the Earth's magnetosphere. The belts contain energetic electrons that form the outer belt and a combination of protons and electrons that form the inner belt. The radiation belts additionally contain less amounts of other nuclei, such as alpha particles. The belts endanger satellites, which must protect their sensitive components with adequate shielding if their orbit spends significant time in the radiation belts. In 2013, NASA reported that the Van Allen Probes had discovered a transient, third radiation belt, which was observed for four weeks until destroyed by a powerful, interplanetary shock wave from the Sun.