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WikiCards · Card list · Science cards · Bortle scale
Uncommon card · Science
Bortle scale, an Uncommon card
The Bortle dark-sky scale is a nine-level numeric scale that measures the night sky's brightness of a particular location.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 60
- DEF
- 40
- Power
- 100
- Wikipedia reads a year
- 140,000
Power 100 (ATK + DEF): stronger than 55 % of WikiCards cards.
Bortle scale quiz: 3 questions
Three questions on the Bortle scale card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It characterizes the ______ of celestial objects, taking into account the interference caused by light pollution.
Answer
observability. It characterizes the observability of celestial objects, taking into account the interference caused by light pollution. From the Bortle scale article on Wikipedia.
In which decade?
Amateur astronomer John E. Bortle created the scale and published it in the February ____ edition of Sky & Telescope magazine to help skywatchers evaluate and compare the darkness of night-sky observing sites.
Answer
2000s. Amateur astronomer John E. Bortle created the scale and published it in the February 2001 edition of Sky & Telescope magazine to help skywatchers evaluate and compare the darkness of night-sky observing sites. From the Bortle scale article on Wikipedia.
Which of these Wikipedia articles is read the most in a year?
Answer
Bortle scale. Bortle scale 140,000 · George Tsokos 1,400 · Senckenberg Museum for Natural History Görlitz 530 · Elias G. Brown 140 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- It characterizes the observability of celestial objects, taking into account the interference caused by light pollution.
- Amateur astronomer John E. Bortle created the scale and published it in the February 2001 edition of Sky & Telescope magazine to help skywatchers evaluate and compare the darkness of night-sky observing sites.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Bortle scale article was read about 140,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 60 and blocks with 40: each hit it takes is cut by 16 %.
How to get Bortle scale
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Bortle scale in the power ranking, all domains together.
- ClaymoreUncommon · History · ATK 60 DEF 40
- Cream cheeseUncommon · Society · ATK 57 DEF 43
- SongbirdUncommon · Nature · ATK 66 DEF 34
- Brian HarveyUncommon · Arts · ATK 60 DEF 40
- BucephalusUncommon · Nature · ATK 57 DEF 43
- Hemispheres of EarthUncommon · Society · ATK 54 DEF 46
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Bortle scale (revision), CC BY-SA 4.0. Photo : ESO/ P. Horálek , M. Wallner, CC BY 4.0, Wikimedia Commons.
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