Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Magnetogram> ?p ?o. }
Showing items 1 to 25 of
25
with 100 items per page.
- Magnetogram abstract "The term magnetogram has two meanings, used separately in the contexts of magnetic fields of the Sun and the Earth.In the context of the magnetic field of the Sun, the term magnetogram refers to a pictorial representation of the spatial variations in strength of the solar magnetic field. Magnetograms are often produced by exploiting the Zeeman effect (or, in some cases, the Hanle effect), which George Ellery Hale employed in the first demonstration that sunspots were magnetic in origin, in 1908. Solar magnetograms are produced by suitably instrumented telescopes referred to as magnetographs. Some magnetographs can only measure the component of the magnetic field along the line of sight from the observer to the source (the field's "longitudinal" component). One example of such a "line-of-sight" or "longitudinal" magnetograph is the Michelson Doppler Imager (MDI), a scientific instrument that takes magnetograms of the Sun in order to measure velocity and magnetic fields in the Sun's photosphere to learn about the convection zone and about the magnetic fields which control the structure of the solar corona. A vector magnetograph also measures the component of the magnetic field perpendicular to the line of sight (the field's "transverse" component), from which all three components of the magnetic field vector can be deduced. Two examples include the National Solar Observatory's SOLIS instrument and the Helioseismic and Magnetic Imager aboard NASA's Solar Dynamics Observatory satellite.In the context of geophysics, a magnetogram is a measurement of temporal variation the local strength and direction of the geomagnetic field. Such magnetograms have existed since Victorian times, and the British Geological Survey has preserved records from the 1850s, showing the effects of the 1859 Carrington Event, the worst magnetic storm known to have hit Earth.".
- Magnetogram wikiPageExternalLink obs_prog.html.
- Magnetogram wikiPageExternalLink solis.nso.edu.
- Magnetogram wikiPageExternalLink 137558.
- Magnetogram wikiPageID "4355282".
- Magnetogram wikiPageRevisionID "587322884".
- Magnetogram hasPhotoCollection Magnetogram.
- Magnetogram subject Category:Magnetic_devices.
- Magnetogram type Artifact100021939.
- Magnetogram type Device103183080.
- Magnetogram type Instrumentality103575240.
- Magnetogram type MagneticDevices.
- Magnetogram type Object100002684.
- Magnetogram type PhysicalEntity100001930.
- Magnetogram type Whole100003553.
- Magnetogram comment "The term magnetogram has two meanings, used separately in the contexts of magnetic fields of the Sun and the Earth.In the context of the magnetic field of the Sun, the term magnetogram refers to a pictorial representation of the spatial variations in strength of the solar magnetic field.".
- Magnetogram label "Magnetogram".
- Magnetogram label "Магнитограмма".
- Magnetogram label "أجهزة الاستنشاق".
- Magnetogram sameAs m.0byvb3.
- Magnetogram sameAs Q4117230.
- Magnetogram sameAs Q4117230.
- Magnetogram sameAs Magnetogram.
- Magnetogram wasDerivedFrom Magnetogram?oldid=587322884.
- Magnetogram isPrimaryTopicOf Magnetogram.