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Uncommon card · Science
Cylindrical coordinate system, an Uncommon card
A cylindrical coordinate system is a three-dimensional coordinate system that specifies point positions around a main axis and an auxiliary axis.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 63
- DEF
- 39
- Power
- 102
- Wikipedia reads a year
- 74,000
Power 102 (ATK + DEF): stronger than 55 % of WikiCards cards.
Cylindrical coordinate system quiz: 3 questions
Three questions on the Cylindrical coordinate system card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The main axis is variously called the cylindrical or ______ axis.
Answer
longitudinal. The main axis is variously called the cylindrical or longitudinal axis. From the Cylindrical coordinate system article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Numeral system. Numeral system 69 · Cylindrical coordinate system 63 · Perlin noise 60 · MALSU1 52 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Numeral system. Numeral system 170,000 · Brocade 98,000 · Cylindrical coordinate system 74,000 · MALSU1 340 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 three cylindrical coordinates are: the point perpendicular distance ρ from the main axis, the point signed distance z along the main axis from a chosen origin, and the plane angle φ of the point projection on a reference plane.
- The main axis is variously called the cylindrical or longitudinal axis.
- The auxiliary axis is called the polar axis, which lies in the reference plane, starting at the origin, and pointing in the reference direction.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Cylindrical coordinate system article was read about 74,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 63 and blocks with 39: each hit it takes is cut by 16 %.
How to get Cylindrical coordinate system
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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Credits
Text : Wikipedia, Cylindrical coordinate system (revision), CC BY-SA 4.0. Photo : Jorge Stolfi, Public domain, Wikimedia Commons.
