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WikiCards · Card list · Science cards · Atomic clock
Rare card · Science
Atomic clock, a Rare card
An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms.
- Rarity
- Rare
- Domain
- Science
- ATK
- 87
- DEF
- 89
- Power
- 176
- Wikipedia reads a year
- 220,000
Power 176 (ATK + DEF): stronger than 90 % of WikiCards cards.
Atomic clock quiz: 3 questions
Three questions on the Atomic clock card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
This phenomenon serves as the basis for the SI definition of the ______: The second, symbol s, is the SI unit of time.
Answer
second. This phenomenon serves as the basis for the SI definition of the second: The second, symbol s, is the SI unit of time. From the Atomic clock article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Traditional Chinese medicine. Traditional Chinese medicine 96 · Atomic clock 87 · Motorcycle 82 · Gastroenteritis 79 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.
- It is based on the fact that atoms have quantised energy levels, and transitions between such levels are driven by very specific frequencies of electromagnetic radiation.
- This phenomenon serves as the basis for the SI definition of the second: The second, symbol s, is the SI unit of time.
- It is defined by taking the fixed numerical value of the caesium frequency, Δ ν Cs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9192631770 when expressed in the unit Hz, which is equal to s−1.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Atomic clock article was read about 220,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 87 and blocks with 89: each hit it takes is cut by 36 %.
How to get Atomic clock
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 Atomic clock in the power ranking, all domains together.
- Luca ToniRare · Society · ATK 82 DEF 94
- Traditional Chinese medicineRare · Science · ATK 96 DEF 80
- Arthur BalfourRare · History · ATK 84 DEF 92
- Carolingian dynastyRare · History · ATK 81 DEF 95
- Seleucus I NicatorRare · History · ATK 80 DEF 96
- Salvador, BahiaRare · Society · ATK 90 DEF 86
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, Atomic clock (revision), CC BY-SA 4.0. Photo : Constant314, CC0, Wikimedia Commons.
