- normal brightness
- 正射亮度
Medical Chinese dictionary (湘雅医学词典). 2013.
Medical Chinese dictionary (湘雅医学词典). 2013.
Low surface brightness galaxy — A low surface brightness galaxy or LSB galaxy is a diffuse galaxy with a surface brightness that, when viewed from Earth, is at least one magnitude lower than the ambient night sky.Most LSBs are dwarf galaxies, in which most of their baryonic… … Wikipedia
Variable star — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… … Wikipedia
Amiga Original chipset — The Original Chip Set (OCS) was a chipset used in the earliest Commodore Amiga computers and defined the Amiga s graphics and sound capabilities. It was succeeded by the slightly improved Enhanced Chip Set (ECS) and greatly improved Advanced… … Wikipedia
Original Chip Set — The Original Chip Set (OCS) was a chipset used in the earliest Commodore Amiga computers and defined the Amiga s graphics and sound capabilities. It was succeeded by the slightly improved Enhanced Chip Set (ECS) and greatly improved Advanced… … Wikipedia
R Coronae Borealis — Starbox begin name=R CrBStarbox image caption = R Coronae Borealis Starbox observe epoch=J2000 ra=RA|15|48|34.4149 dec=DEC|+28|09|24.296 appmag v=5.9 constell=Corona Borealis Starbox character class=G0Iab:pe b v=? u b=? variable=Variable Star of… … Wikipedia
Amiga — This article is about the family of home computers. For other uses, see Amiga (disambiguation). The former Amiga logo, as used by Commodore Amiga Inc … Wikipedia
U Geminorum star — ▪ astronomy any of a class of irregular variable stars that display sudden increases in brightness so great that they are sometimes called dwarf novae. Some have been observed to brighten by as much as 5 magnitudes (100 times) in a period… … Universalium
Amiga 600 — Infobox computer Photo = Name = Commodore Amiga 600 Type = Home computer Released = 1992 Discontinued = 1993 CPU = Motorola 68000 @ 7.16 MHz 7.09 MHz (PAL) Memory = 1 MB (6 MB Maximum) OS = Amiga OS 2.0The Amiga 600, also known as the A600… … Wikipedia
Akihiko Tago — nihongo|Akihiko Tago|多胡 昭彦| Tago Akihiko is a Japanese amateur astronomer.He co discovered several comets, including C/1968 H1 (Tago Honda Yamamoto), C/1969 T1 (Tago Sato Kosaka), C/1987 B1 (Nishikawa Takamizawa Tago).He also discovered several… … Wikipedia
nova — no|va [ nouvə ] noun count a star that unexpectedly becomes very bright and then returns to its normal brightness over a period of months or years … Usage of the words and phrases in modern English
nova — UK [ˈnəʊvə] / US [ˈnoʊvə] noun [countable] Word forms nova : singular nova plural novas a star that unexpectedly becomes very bright and then returns to its normal brightness over a period of months or years … English dictionary