umbrae

n.

本影，暗影，蚀时的地球( umbra的名词复数 )；

Material motions in sunspot umbrae
Chromospheric inhomogeneities in sunspot umbrae
Linear models of acoustic waves in sunspot umbrae
A High-Resolution Study of Inhomogeneities in Sunspot Umbrae
Photometria sive de mensura de gratibus luminis, colorum et umbrae
Photometria Sive de Mensure de Gradibus Luminis, Colorum et Umbrae
Lambert's Photometrie : (Photometria sive de mensura et gradibus luminis, colorum et umbrae) : (1760) | Clc
Fluid motions in the solar chromosphere-corona transition region. IV - Mass motions over sunspot umbrae
Photoelectric observations of chromospheric sunspot oscillations. III - Spatial distribution of power and frequency in umbrae
Stokes profile analysis and vector magnetic fields. III - Extended temperature minima of sunspot umbrae as inferred from Stokes prof...