The Magnetic Compass and GPS - University of New Brunswick
... The magnetic compass has been guiding travelers for a thousand years or more. It is one of the oldest navigation instruments and is still widely used by ship captains, pilots, Boy and Girl Scouts, and hikers. But thanks to modern microelectronic technology, the compass has been reborn. Electronic ve ...
... The magnetic compass has been guiding travelers for a thousand years or more. It is one of the oldest navigation instruments and is still widely used by ship captains, pilots, Boy and Girl Scouts, and hikers. But thanks to modern microelectronic technology, the compass has been reborn. Electronic ve ...
observatory - Science Presenters Central
... The Sun’s atmosphere is periodically changed by its magnetic fields, and the most common features of these changes are sunspots. These are areas of the photosphere that appear dark because they are cooler than the rest of the Sun’s lower atmosphere. Most of the time, they appear in groups or cluster ...
... The Sun’s atmosphere is periodically changed by its magnetic fields, and the most common features of these changes are sunspots. These are areas of the photosphere that appear dark because they are cooler than the rest of the Sun’s lower atmosphere. Most of the time, they appear in groups or cluster ...
Current-voltage and kinetic energy flux relations for relativistic field
... current density is ∼0.1 µA m−2 for a typical outer plasma sheet electron distribution with a density of ∼0.1 cm−3 and a temperature of ∼1 keV, whilst the current densities implied by the magnetic field perturbations observed in the auroral ionosphere are often more than an order of magnitude larger ...
... current density is ∼0.1 µA m−2 for a typical outer plasma sheet electron distribution with a density of ∼0.1 cm−3 and a temperature of ∼1 keV, whilst the current densities implied by the magnetic field perturbations observed in the auroral ionosphere are often more than an order of magnitude larger ...
Counter equatorial electrojet and overshielding after substorm onset
... from the observational fact that a CEJ is not always observed during substorms [Sastri et al., ...
... from the observational fact that a CEJ is not always observed during substorms [Sastri et al., ...
- Wiley Online Library
... pressure changes. In the second event observed at 1610 UT on 27 May 1998, an eastward moving TCV appeared in the noon sector in the Northern and Southern Hemispheres, with a timing delay of 2 to 3 min in the Southern Hemisphere. The solar wind source of this TCV is found again to be a TD, which cau ...
... pressure changes. In the second event observed at 1610 UT on 27 May 1998, an eastward moving TCV appeared in the noon sector in the Northern and Southern Hemispheres, with a timing delay of 2 to 3 min in the Southern Hemisphere. The solar wind source of this TCV is found again to be a TD, which cau ...
study of planetary magnetic fields
... Mercury: Earth and Mercury are the only planets in our system whose magnetic fields are generated by the movement of liquid metal at their cores. Mercury’s magnetic field is 100 times weaker than Earth’s. It’s billions of years old and recently discovered data suggests that it was at one point as st ...
... Mercury: Earth and Mercury are the only planets in our system whose magnetic fields are generated by the movement of liquid metal at their cores. Mercury’s magnetic field is 100 times weaker than Earth’s. It’s billions of years old and recently discovered data suggests that it was at one point as st ...
Energy Dissipation in Relativistic Magnetized Outflows (Arons)
... assigned emissivity (e.g. constant along B), beamed along particle trajectories in force free fields (particles have E x B drift + parallel slide along B, v < c) Peaks are caustics – photons beamed along orbits from separate sites but times of flight and beaming directions conspire to have many arri ...
... assigned emissivity (e.g. constant along B), beamed along particle trajectories in force free fields (particles have E x B drift + parallel slide along B, v < c) Peaks are caustics – photons beamed along orbits from separate sites but times of flight and beaming directions conspire to have many arri ...
Additional acceleration of solar-wind particles in current sheets of
... the conditions of magnetic reconnection in the heliopause and showed that the reconnection can only occur if the interstellar magnetic field points to the heliospheric field in a nearly antiparallel way; this can stabilise the process of reconnection and secure steady streams of ions from the curren ...
... the conditions of magnetic reconnection in the heliopause and showed that the reconnection can only occur if the interstellar magnetic field points to the heliospheric field in a nearly antiparallel way; this can stabilise the process of reconnection and secure steady streams of ions from the curren ...
ASTR178-Week3
... B. When life first developed on the Earth, this life produced oxygen from carbon dioxide by photosynthesis. C. Rainwater slowly broke down carbon dioxide into its components. D. Oxygen was captured from space over many millions of years. E. Solar radiation breaks down CO2. A9.12 ...
... B. When life first developed on the Earth, this life produced oxygen from carbon dioxide by photosynthesis. C. Rainwater slowly broke down carbon dioxide into its components. D. Oxygen was captured from space over many millions of years. E. Solar radiation breaks down CO2. A9.12 ...
Strong field dynamics in high-energy heavy-ion
... • Strong EM/YM fields appear in the very early time of heavy-ion collisions. In other words, the fields are strongest in the early time stages. • Indispensable for understanding the early-time dynamics in heavy-ion collisions strong YM fields (glasma) thermalization strong EM fields probe of ear ...
... • Strong EM/YM fields appear in the very early time of heavy-ion collisions. In other words, the fields are strongest in the early time stages. • Indispensable for understanding the early-time dynamics in heavy-ion collisions strong YM fields (glasma) thermalization strong EM fields probe of ear ...
Magnets and Electromagnets - School Masters Consulting
... e.g. opposite poles of two magnets. electromagnet – A magnet made by passing electricity through a coil of wire, which often has a core inside. magnet – An object that has a magnetic field and can attract magnetic materials. magnetic field – The area around a magnet where its magnetic force can be f ...
... e.g. opposite poles of two magnets. electromagnet – A magnet made by passing electricity through a coil of wire, which often has a core inside. magnet – An object that has a magnetic field and can attract magnetic materials. magnetic field – The area around a magnet where its magnetic force can be f ...
2012_spring online homework 12 solution
... Part H Finally we are ready to show that the electric and magnetic fields given in the introduction describe an electromagnetic wave propagating at the speed of light. If the electric and magnetic fields are to be self-consistent, they must obey all of Maxwell's equations. Using one of Maxwell's eq ...
... Part H Finally we are ready to show that the electric and magnetic fields given in the introduction describe an electromagnetic wave propagating at the speed of light. If the electric and magnetic fields are to be self-consistent, they must obey all of Maxwell's equations. Using one of Maxwell's eq ...
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.