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WikiCards · Card list · Science cards · Instability strip
Common card · Science
Instability strip, a Common card
The unqualified term instability strip usually refers to a region of the Hertzsprung–Russell diagram largely occupied by several related classes of pulsating variable stars: Delta Scuti variables, SX Phoenicis variables, and rapidly oscillating Ap stars near the main sequence, RR Lyrae variables where it intersects…
- Rarity
- Common
- Domain
- Science
- ATK
- 53
- DEF
- 27
- Power
- 80
- Wikipedia reads a year
- 8,400
Power 80 (ATK + DEF): stronger than 25 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- RV Tauri variables are also often considered to lie on the instability strip, occupying the area to the right of the brighter Cepheids, since their stellar pulsations are attributed to the same mechanism.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Instability strip article was read about 8,400 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 53 and blocks with 27: each hit it takes is cut by 11 %.
How to get Instability strip
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.
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The cards just above and just below Instability strip in the power ranking, all domains together.
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Credits
Text : Wikipedia, Instability strip (revision), CC BY-SA 4.0. Photo : Rursus, CC BY-SA 3.0, Wikimedia Commons.
