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WikiCards · Card list · Science cards · Aperture
Uncommon card · Science
Aperture, an Uncommon card
In optics, the aperture of an optical system is the hole or opening that primarily limits light propagated through the system.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 74
- DEF
- 68
- Power
- 142
- Wikipedia reads a year
- 120,000
Power 142 (ATK + DEF): stronger than 75 % of WikiCards cards.
Aperture quiz: 3 questions
Three questions on the Aperture card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
An ______ system typically has many structures that limit ray bundles.
Answer
optical. An optical system typically has many structures that limit ray bundles. From the Aperture article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Crossword. Crossword 83 · Interpersonal relationship 79 · Aperture 74 · Carom billiards 68 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Circle. Circle 190,000 · Aperture 120,000 · Barbed wire 96,000 · Negative number 53,000 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.
- The aperture defines a set of rays from each point on an object that will come to a focus in the image plane.
- This set of rays, sometimes called a bundle of rays or cone of rays, is mathematically a generalized cone.
- An optical system typically has many structures that limit ray bundles.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Aperture article was read about 120,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 74 and blocks with 68: each hit it takes is cut by 27 %.
How to get Aperture
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 Aperture in the power ranking, all domains together.
- Crocodile attackUncommon · History · ATK 75 DEF 67
- Elly SchleinUncommon · History · ATK 73 DEF 69
- Air traffic controlUncommon · Science · ATK 75 DEF 66
- Carom billiardsUncommon · Science · ATK 68 DEF 74
- CrosswordUncommon · Society · ATK 83 DEF 59
- Maria Amalia of Naples and SicilyUncommon · History · ATK 68 DEF 74
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, Aperture (revision), CC BY-SA 4.0. Photo : KoeppiK, CC BY-SA 4.0, Wikimedia Commons.
