Plate tectonics lecture, Evidence
... mountain chains called ocean ridges. • The same data showed that these underwater mountain chains have counterparts called deep-sea trenches. • These two topographic features of the ocean floor puzzled geologists for over a decade after their discovery. ...
... mountain chains called ocean ridges. • The same data showed that these underwater mountain chains have counterparts called deep-sea trenches. • These two topographic features of the ocean floor puzzled geologists for over a decade after their discovery. ...
levitation - Duke Mathematics
... including strawberries, water and gold – are ‘diamagnetic’ to some extent, but some are more convenient to levitate than others. Frogs are convenient not only because they have a high water content, which is a good diamagnetic material, but also because they fit easily inside a tubeshaped Bitter el ...
... including strawberries, water and gold – are ‘diamagnetic’ to some extent, but some are more convenient to levitate than others. Frogs are convenient not only because they have a high water content, which is a good diamagnetic material, but also because they fit easily inside a tubeshaped Bitter el ...
Magnetism PowerPoint Template
... magnets depends on how the poles of the magnets line up. Like poles repel, and opposite poles attract ...
... magnets depends on how the poles of the magnets line up. Like poles repel, and opposite poles attract ...
Lecture 15
... The flux due to the external field is increasing into the page The flux due to the induced current must be out of the page Therefore the current must be counterclockwise when the bar moves to the right ...
... The flux due to the external field is increasing into the page The flux due to the induced current must be out of the page Therefore the current must be counterclockwise when the bar moves to the right ...
Electricity and Magnetism – Ch 1 “Magnetism”
... • The magnetic poles are located on Earth’s surface where the magnetic force is _______________________. • They are located close to the ___________ poles but not exactly at them (about 1,250 km off) • Because of this, a compass will not point ______________ to the north (axis) pole. • _____________ ...
... • The magnetic poles are located on Earth’s surface where the magnetic force is _______________________. • They are located close to the ___________ poles but not exactly at them (about 1,250 km off) • Because of this, a compass will not point ______________ to the north (axis) pole. • _____________ ...
A two-step scenario for both solar flares and magnetospheric substorms:
... Impulsive flares, on the other hand, are relatively small with characteristic scales of ∼104 km but occur much more frequently than LDE flares. A notable feature of these events is that they do not show clear cusp-shaped loop structures, so some researchers considered the two types of flares to be d ...
... Impulsive flares, on the other hand, are relatively small with characteristic scales of ∼104 km but occur much more frequently than LDE flares. A notable feature of these events is that they do not show clear cusp-shaped loop structures, so some researchers considered the two types of flares to be d ...
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.