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WikiCards · Card list · Science cards · Halbach array
Uncommon card · Science
Halbach array, an Uncommon card
A Halbach array is a special arrangement of permanent magnets that augments the magnetic field on one side of the array while cancelling the field to near zero on the other side.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 73
- DEF
- 63
- Power
- 136
- Wikipedia reads a year
- 55,000
Power 136 (ATK + DEF): stronger than 70 % of WikiCards cards.
Halbach array quiz: 3 questions
Three questions on the Halbach array card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
This is achieved by having a spatially rotating pattern of ______.
Answer
magnetisation. This is achieved by having a spatially rotating pattern of magnetisation. From the Halbach array article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Excise. Excise 76 · Halbach array 73 · Phaedo 70 · Sweyn II of Denmark 64 ATK in WikiCards.
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.
- This is achieved by having a spatially rotating pattern of magnetisation.
- The rotating pattern of permanent magnets can be continued indefinitely and have the same effect.
- The effect of this arrangement is roughly similar to many horseshoe magnets placed adjacent to each other, with similar poles touching.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Halbach array article was read about 55,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 73 and blocks with 63: each hit it takes is cut by 25 %.
How to get Halbach array
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 Halbach array in the power ranking, all domains together.
- ConfluenceUncommon · Nature · ATK 71 DEF 65
- Michael ConlanUncommon · Society · ATK 73 DEF 63
- ExciseUncommon · Science · ATK 76 DEF 60
- Saku KoivuUncommon · Society · ATK 73 DEF 63
- PrologisUncommon · Society · ATK 70 DEF 66
- Sweyn II of DenmarkUncommon · History · ATK 64 DEF 72
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, Halbach array (revision), CC BY-SA 4.0. Photo : Fips77, CC BY-SA 4.0, Wikimedia Commons.
