| 单词 | hertzsprung-russell diagram |
| 释义 | Hertzsprung-Russell diagram in British English (ˈhɜːtssprʌŋˈrʌsəl) noun a graph in which the spectral types of stars are plotted against their absolute magnitudes. Stars fall into different groupings in different parts of the graph See also main sequenceWord origin C20: named after Ejnar Hertzsprung and Henry Norris RussellHertzsprung-Russell diagram in American English (ˈhɛərtspruŋ ˈrʌsəl) noun Astronomy the graph showing the absolute magnitude plotted against the surface temperature for a group of stars Also called: H-R diagram Word origin [after Danish astronomer Ejnar Hertzsprung (1873–1967) and H. N. russell, who compiled the data on which it is based] |
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