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WikiCards · Card list · Nature cards · Radio acoustic ranging
Common card · Nature
Radio acoustic ranging, a Common card
Radio acoustic ranging, occasionally written as "radio-acoustic ranging", was a method for determining a ship's precise location at sea by detonating an explosive charge underwater near the ship, detecting the arrival of the underwater sound waves at remote locations, and radioing the time of arrival of the sound…
- Rarity
- Common
- Domain
- Nature
- ATK
- 66
- DEF
- 64
- Power
- 130
- Wikipedia reads a year
- 770
Power 130 (ATK + DEF): stronger than 70 % of WikiCards cards.
Radio acoustic ranging quiz: 3 questions
Three questions on the Radio acoustic ranging card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Which of these cards hits hardest (highest ATK)?
Answer
Black Hills. Black Hills 73 · Cellular respiration 70 · Radio acoustic ranging 66 · Hodgson's giant flying squirrel 61 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Toucan. Toucan 280,000 · Elysium 2,900 · Climate change in New Jersey 1,400 · Radio acoustic ranging 770 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.
- Developed by the United States Coast and Geodetic Survey in 1923 and 1924 for use in accurately fixing the position of survey ships during hydrographic survey operations, it was the first navigation technique in human history other than dead reckoning that did not require visual observation of a landmark, marker, light, or celestial body, and the first non-visual means to provide precise…
- First employed operationally in 1924, RAR remained in use until 1944, when new radio navigation techniques developed during World War II rendered it obsolete.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Radio acoustic ranging article was read about 770 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 66 and blocks with 64: each hit it takes is cut by 26 %.
How to get Radio acoustic ranging
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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Card lists
- Wikipedia quizNew questions every day
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Credits
Text : Wikipedia, Radio acoustic ranging (revision), CC BY-SA 4.0. Photo : Unattributed United States Coast and Geodetic Survey illustration via w:National Oceanic a, Public domain, Wikimedia Commons.
