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WikiCards · Card list · Science cards · Black body
Uncommon card · Science
Black body, an Uncommon card
A black body or blackbody is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 76
- DEF
- 80
- Power
- 156
- Wikipedia reads a year
- 110,000
Power 156 (ATK + DEF): stronger than 80 % of WikiCards cards.
Black body quiz: 3 questions
Three questions on the Black body card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The name "black body" is given because it ______ all colors of light.
Answer
absorbs. The name "black body" is given because it absorbs all colors of light. From the Black body article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Metric space. Metric space 83 · Vacuum 80 · Black body 76 · Ivan Pavlov 73 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Set. Set 220,000 · Vacuum 140,000 · Black body 110,000 · Human intelligence 80,000 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 radiation emitted by a black body in thermal equilibrium with its environment is called black-body radiation.
- The name "black body" is given because it absorbs all colors of light.
- In contrast, a white body is one with a "rough surface that reflects all incident rays completely and uniformly in all directions." A black body in thermal equilibrium emits electromagnetic black-body radiation.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Black body article was read about 110,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 76 and blocks with 80: each hit it takes is cut by 32 %.
How to get Black body
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 Black body in the power ranking, all domains together.
- National parkUncommon · Society · ATK 75 DEF 81
- AizawlUncommon · Society · ATK 75 DEF 81
- ApartmentUncommon · Arts · ATK 80 DEF 76
- AliceUncommon · Arts · ATK 71 DEF 85
- Resplendent quetzalUncommon · Nature · ATK 71 DEF 85
- I386Uncommon · Science · ATK 79 DEF 77
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, Black body (revision), CC BY-SA 4.0. Photo : Luminforum, CC BY 4.0, Wikimedia Commons.
