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WikiCards · Card list · Science cards · Event horizon
Rare card · Science
Event horizon, a Rare card
In astrophysics, an event horizon is a boundary in spacetime beyond which no signal can ever reach a given observer.
- Rarity
- Rare
- Domain
- Science
- ATK
- 70
- DEF
- 59
- Power
- 129
- Wikipedia reads a year
- 270,000
Power 129 (ATK + DEF): stronger than 70 % of WikiCards cards.
Event horizon quiz: 3 questions
Three questions on the Event horizon card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Wolfgang ______ coined the term in the 1950s.
Answer
Rindler. Wolfgang Rindler coined the term in the 1950s. From the Event horizon article on Wikipedia.
In which decade?
In ____, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape.
Answer
1780s. In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape. From the Event horizon article on Wikipedia.
Which of these Wikipedia articles is read the most in a year?
Answer
Fahrenheit. Fahrenheit 510,000 · Event horizon 270,000 · Rational number 180,000 · Oklahoma State Highway 74 1,800 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.
- Wolfgang Rindler coined the term in the 1950s.
- In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape.
- At that time, the Newtonian theory of gravitation and the so-called corpuscular theory of light were dominant.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Event horizon article was read about 270,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 70 and blocks with 59: each hit it takes is cut by 24 %.
How to get Event horizon
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 Event horizon in the power ranking, all domains together.
- ATP Masters 1000 tournamentsRare · Society · ATK 68 DEF 61
- CharadeRare · Arts · ATK 68 DEF 61
- ToucanRare · Nature · ATK 66 DEF 63
- The Night WatchRare · Arts · ATK 71 DEF 57
- Anterior cruciate ligamentRare · Science · ATK 66 DEF 63
- Cellular respirationRare · Nature · ATK 70 DEF 59
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, Event horizon (revision), CC BY-SA 4.0. Photo : Sandstorm de, CC BY-SA 4.0, Wikimedia Commons.
