WikiCards · Card list · Science cards · John Playfair
Common card · Science
John Playfair, a Common card
John Playfair FRSE, FRS was a Church of Scotland minister, remembered as a scientist and mathematician, and a professor of natural philosophy at the University of Edinburgh.
- Rarity
- Common
- Domain
- Science
- ATK
- 61
- DEF
- 47
- Power
- 108
- Wikipedia reads a year
- 14,000
Power 108 (ATK + DEF): stronger than 50 % of WikiCards cards.
John Playfair quiz: 3 questions
Three questions on the John Playfair card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
He is best known for his book Illustrations of the ______ Theory of the Earth, which summarised the work of James Hutton.
Answer
Huttonian. He is best known for his book Illustrations of the Huttonian Theory of the Earth, which summarised the work of James Hutton. From the John Playfair article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Kristin Armstrong. Kristin Armstrong 69 · Alexander Bain 65 · John Playfair 61 · Kjerag 53 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.
- He is best known for his book Illustrations of the Huttonian Theory of the Earth, which summarised the work of James Hutton.
- It was through this book that Hutton's principle of uniformitarianism, later taken up by Charles Lyell, first reached a wide audience.
- Playfair's textbook Elements of Geometry made a brief expression of Euclid's parallel postulate known now as Playfair's axiom.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The John Playfair article was read about 14,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 61 and blocks with 47: each hit it takes is cut by 19 %.
How to get John Playfair
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 John Playfair in the power ranking, all domains together.
- Ferney-VoltaireCommon · Society · ATK 59 DEF 49
- Gavrila DerzhavinCommon · History · ATK 62 DEF 46
- Henri Gaudier-BrzeskaCommon · Arts · ATK 59 DEF 49
- KjeragCommon · Nature · ATK 53 DEF 55
- Kristin ArmstrongCommon · Society · ATK 69 DEF 39
- Lars Peter HansenCommon · History · ATK 66 DEF 42
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, John Playfair (revision), CC BY-SA 4.0. Photo : Sir Henry Raeburn (died 1823), Public domain, Wikimedia Commons.

