helioseismological
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helioseismological — … Useful english dictionary
Solar and Heliospheric Observatory — ▪ satellite satellite managed jointly by the European Space Agency (ESA) and the U.S. National Aeronautics and Space Administration (NASA) that is equipped with a battery of novel instruments to study the Sun. SOHO was launched by NASA on an… … Universalium
Main sequence — A Hertzsprung Russell diagram plots the actual brightness (or absolute magnitude) of a star against its color index (represented as B V). The main sequence is visible as a prominent diagonal band that runs from the upper left to the lower right.… … Wikipedia
Differential rotation — is seen when different parts of a rotating object move with different angular velocities (rates of rotation) at different latitudes and/or depths of the body and/or in time. This indicates that the object is not solid. In fluid objects, such as… … Wikipedia
Differential rotation in stars — What is differential rotation? *Differential rotation is when a rotating body has different angular velocities at different latitudes and/or depths of the body and/or in time. Differential rotation can be applied to any type of fluid body such as … Wikipedia
Séquence principale — Le diagramme de Hertzsprung Russell figure les étoiles. En abscisse, l indice de couleur (B V) ; en ordonnée, la magnitude absolue. La séquence principale se voit comme une bande diagonale marquée allant du haut à gauche au bas à droite. Ce… … Wikipédia en Français
helioseismology — /ˌhilioʊsaɪzˈmɒlədʒi/ (say .heeleeohsuyz moluhjee) noun the branch of astrophysics that studies the soundwaves that propagate throughout the sun in order to investigate its internal structure and dynamics. {helio + seismology} –helioseismologic… …
