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WikiCards · Card list · Science cards · Solenoidal vector field
Common card · Science
Solenoidal vector field, a Common card
In vector calculus and differential equations, a divergence free vector field is a vector field v with divergence zero at all points in the field: ∇ ⋅ v = 0.
- Rarity
- Common
- Domain
- Science
- ATK
- 41
- DEF
- 13
- Power
- 54
- Wikipedia reads a year
- 13,000
Power 54 (ATK + DEF).
Solenoidal vector field quiz: 3 questions
Three questions on the Solenoidal vector field card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Which of these cards hits hardest (highest ATK)?
Answer
Solenoidal vector field. Solenoidal vector field 41 · Geminal diol 38 · Phthalate 4,5-dioxygenase 35 · Urabrible, New South Wales 30 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Solenoidal vector field. Solenoidal vector field 13,000 · Phthalate 4,5-dioxygenase 170 · Giovanni Battista Pisani 120 · OST4 64 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.
- A common way of expressing this property is to say that the field has no sources or sinks, but one must be careful with this interpretation because there are vector fields without sources or sinks that still have non-zero divergence.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Solenoidal vector field article was read about 13,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 41 and blocks with 13: each hit it takes is cut by 5 %.
How to get Solenoidal vector field
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 Solenoidal vector field in the power ranking, all domains together.
- Rolf LøvlandUncommon · Arts · ATK 42 DEF 12
- Danny HeifetzUncommon · Arts · ATK 43 DEF 11
- International University of MonacoCommon · Society · ATK 37 DEF 17
- PreguinhoCommon · Society · ATK 42 DEF 12
- Raunak SadhwaniCommon · Society · ATK 37 DEF 17
- Xiao RibenCommon · Science · ATK 35 DEF 19
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Credits
Text : Wikipedia, Solenoidal vector field (revision), CC BY-SA 4.0. Photo : Eviatar Bach, CC BY-SA 4.0, Wikimedia Commons.
