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Qu'est-ce (qui) est apparent magnitude - définition
Apparent magnitude
![Asteroid [[65 Cybele]] and two stars, with their magnitudes labeled](https://commons.wikimedia.org/wiki/Special:FilePath/65Cyb-LB3-apmag.jpg?width=200 "Asteroid [[65 Cybele]] and two stars, with their magnitudes labeled")
![VISTA]]. This [[nebula]] has a visual magnitude of 8.](https://commons.wikimedia.org/wiki/Special:FilePath/VISTA Magellanic Cloud Survey view of the Tarantula Nebula.jpg?width=200 "VISTA]]. This [[nebula]] has a visual magnitude of 8.")
MEASURE OF BRIGHTNESS FOR CELESTIAL OBJECTS, AS SEEN FROM EARTH
Stellar magnitude; Visual magnitude; Apparent Visual Magnitude; Apparent brightness; Apparent Magnitude; Apparent Visual Brightness; Apparent visual magnitude; Visible magnitude; Apparent bolometric magnitude; Apparant magnitude; Optical magnitude; Apparent bightness; Apparent luminosity; Apparent visual magnitudes; Pogson's ratio; Pogsons ratio; Pogson's Ratio; V magnitude; Sixth magnitude star; Fifth magnitude star; Second magnitude star; Visual apparent magnitude; Relative magnitude; Apparent magnitudes; 10^(2/5)
Apparent magnitude () is a measure of the brightness of a star or other astronomical object observed from Earth. An object's apparent magnitude depends on its intrinsic luminosity, its distance from Earth, and any extinction of the object's light caused by interstellar dust along the line of sight to the observer.
apparent magnitude
MEASURE OF BRIGHTNESS FOR CELESTIAL OBJECTS, AS SEEN FROM EARTH
Stellar magnitude; Visual magnitude; Apparent Visual Magnitude; Apparent brightness; Apparent Magnitude; Apparent Visual Brightness; Apparent visual magnitude; Visible magnitude; Apparent bolometric magnitude; Apparant magnitude; Optical magnitude; Apparent bightness; Apparent luminosity; Apparent visual magnitudes; Pogson's ratio; Pogsons ratio; Pogson's Ratio; V magnitude; Sixth magnitude star; Fifth magnitude star; Second magnitude star; Visual apparent magnitude; Relative magnitude; Apparent magnitudes; 10^(2/5)
¦ noun Astronomy the magnitude of a celestial object as it is measured from the earth.
Seismic magnitude scales
![Typical seismogram. The compressive [[P-waves]] (following the red lines) – essentially sound passing through rock – are the fastest seismic waves, and arrive first, typically in about 10 seconds for an earthquake around 50 km away. The sideways-shaking [[S-waves]] (following the green lines) arrive some seconds later, traveling a little over half the speed of the P-waves; the delay is a direct indication of the distance to the quake. S-waves may take an hour to reach a point 1000 km away. Both of these are ''body-waves'', that pass directly through the earth's crust. Following the S-waves are various kinds of ''surface-waves'' – [[Love wave]]s and [[Rayleigh wave]]s – that travel only at the earth's surface. Surface waves are smaller for deep earthquakes, which have less interaction with the surface. For shallow earthquakes – less than roughly 60 km deep – the surface waves are stronger, and may last several minutes; these carry most of the energy of the quake, and cause the most severe damage.](https://commons.wikimedia.org/wiki/Special:FilePath/1906 San Francisco earthquake seismograph.png?width=200 "Typical seismogram. The compressive [[P-waves]] (following the red lines) – essentially sound passing through rock – are the fastest seismic waves, and arrive first, typically in about 10 seconds for an earthquake around 50 km away. The sideways-shaking [[S-waves]] (following the green lines) arrive some seconds later, traveling a little over half the speed of the P-waves; the delay is a direct indication of the distance to the quake. S-waves may take an hour to reach a point 1000 km away. Both of these are ''body-waves'', that pass directly through the earth's crust. Following the S-waves are various kinds of ''surface-waves'' – [[Love wave]]s and [[Rayleigh wave]]s – that travel only at the earth's surface. Surface waves are smaller for deep earthquakes, which have less interaction with the surface. For shallow earthquakes – less than roughly 60 km deep – the surface waves are stronger, and may last several minutes; these carry most of the energy of the quake, and cause the most severe damage.")
![Isoseismal map for the [[1968 Illinois earthquake]]. The irregular distribution of shaking arises from variations of geology and/or ground conditions.](https://commons.wikimedia.org/wiki/Special:FilePath/1968 Illinois earthquake.svg?width=200 "Isoseismal map for the [[1968 Illinois earthquake]]. The irregular distribution of shaking arises from variations of geology and/or ground conditions.")
MAGNITUDE OF AN EARTHQUAKE
Seismic scales; Earthquake magnitude; Magnitude (earthquake); Nuttli magnitude; Seismic scale; Seismic magnitude scale; Body-wave magnitude; Earthquake measurement
Seismic magnitude scales are used to describe the overall strength or "size" of an earthquake. These are distinguished from seismic intensity scales that categorize the intensity or severity of ground shaking (quaking) caused by an earthquake at a given location.
Exemples du corpus de texte pour apparent magnitude
1. "The fabrication of this scene (of such apparent magnitude) cannot be justified under any reasonable definition of dramatic license," he wrote.