CEDAR2014
... The inertia of the ionosphere/thermosphere plays an important role More driving force is needed to push the ionosphere into motion An overshoot in disturbance is expected: substorm onset/brightening (it is not necessary that the magnetospheric source is explosive) Wave reflections between the ionosp ...
... The inertia of the ionosphere/thermosphere plays an important role More driving force is needed to push the ionosphere into motion An overshoot in disturbance is expected: substorm onset/brightening (it is not necessary that the magnetospheric source is explosive) Wave reflections between the ionosp ...
1B11 Foundations of Astronomy Star names and magnitudes
... 1B11 Magnetic flux tube We can define a magnetic flux tube: by taking the closed loop and moving it parallel to the field it encloses. The surface, or tube S3, thus created has zero flux through it and consequently the fluid elements that form the flux tube at one moment, form the flux tube at all ...
... 1B11 Magnetic flux tube We can define a magnetic flux tube: by taking the closed loop and moving it parallel to the field it encloses. The surface, or tube S3, thus created has zero flux through it and consequently the fluid elements that form the flux tube at one moment, form the flux tube at all ...
PowerPoint - Astronomy at Swarthmore College
... and Mg XI (solid histograms) . Show are the resonant (left), intercombination (middle) and forbidden (right) lines. In hot stars, the forbidden-line strength of He-like ions is reduced by photoexcitation of electrons in the 3S1 state by photospheric UV radiation. We do not detect the Mg XI f line. T ...
... and Mg XI (solid histograms) . Show are the resonant (left), intercombination (middle) and forbidden (right) lines. In hot stars, the forbidden-line strength of He-like ions is reduced by photoexcitation of electrons in the 3S1 state by photospheric UV radiation. We do not detect the Mg XI f line. T ...
Notes: Earth`s Atmosphere PowerPoint
... Does temperature increase or decrease as you move up through the stratosphere? ...
... Does temperature increase or decrease as you move up through the stratosphere? ...
Notes Sec 4.1
... are not at the north pole or the south pole. Actually they are 1500km from the N pole and 2600km from the S pole. Draw figure 4.6 Label -geographic north and south pole -geomagnetic north and south -the bar magnet inside the earth ...
... are not at the north pole or the south pole. Actually they are 1500km from the N pole and 2600km from the S pole. Draw figure 4.6 Label -geographic north and south pole -geomagnetic north and south -the bar magnet inside the earth ...
Chapter 5 Electrostatics
... • SUPERCONDUCTOR – Like an MRI unit – low resistance (niobium/titanium) • Semi-conductor = depending on the conditions, can be either a conductor/insulator ...
... • SUPERCONDUCTOR – Like an MRI unit – low resistance (niobium/titanium) • Semi-conductor = depending on the conditions, can be either a conductor/insulator ...
Chapter 5 Electrostatics
... • SUPERCONDUCTOR – Like an MRI unit – low resistance (niobium/titanium) • Semi-conductor = depending on the conditions, can be either a conductor/insulator ...
... • SUPERCONDUCTOR – Like an MRI unit – low resistance (niobium/titanium) • Semi-conductor = depending on the conditions, can be either a conductor/insulator ...
Chapter 7: Magnetism and Its Uses
... secondary coils, wrapped around the same iron core As the alternating current passes through the primary coil the core becomes an electromagnet Because the current is changing direction many times each second, the magnetic field of the iron core changes direction. The changing magnetic field i ...
... secondary coils, wrapped around the same iron core As the alternating current passes through the primary coil the core becomes an electromagnet Because the current is changing direction many times each second, the magnetic field of the iron core changes direction. The changing magnetic field i ...
Used to determine the direction of emf induced in a conductor
... A generator works on the principles of Faraday’s law of electromagnetic induction Whenever a conductor is moved in the magnetic field , an emf is induced and the magnitude of the induced emf is directly proportional to the rate of change of flux linkage. ...
... A generator works on the principles of Faraday’s law of electromagnetic induction Whenever a conductor is moved in the magnetic field , an emf is induced and the magnitude of the induced emf is directly proportional to the rate of change of flux linkage. ...
Section 22.1 - CPO Science
... place, a compass will not point directly to the geographic north pole. ...
... place, a compass will not point directly to the geographic north pole. ...
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.