Engelsk navneord: Ra |
1. | Ra (om masse el. substans) an intensely radioactive metallic element that occurs in minute amounts in uranium ores |
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| Termer med samme betydning (synonymer) | atomic number 88, radium |
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| Mindre specifikke termer | metal, metallic element |
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| Vedrærer disse overordnede termer | uranium ore |
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2. | Ra (om person) ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods |
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| Termer med samme betydning (synonymer) | Re |
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| Eksempler på forekomster af mindre specifikke termer | Egyptian deity |
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| Overordnet emneområde | antiquity |
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3. | RA (om sted) (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere |
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| Eksempler med tilsvarende betydning | One hour of right ascension equals fifteen degrees.
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| Termer med samme betydning (synonymer) | celestial longitude, right ascension |
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| Mindre specifikke termer | angular distance |
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| Overordnet emneområde | astronomy, uranology |
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