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Uncommon card · Science
Gallium nitride, an Uncommon card
Gallium nitride is a binary III/V direct bandgap semiconductor commonly used in blue light-emitting diodes since the 1990s.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 74
- DEF
- 84
- Power
- 158
- Wikipedia reads a year
- 110,000
Power 158 (ATK + DEF): stronger than 80 % of WikiCards cards.
Gallium nitride quiz: 3 questions
Three questions on the Gallium nitride card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The ______ is a very hard material that has a Wurtzite crystal structure.
Answer
compound. The compound is a very hard material that has a Wurtzite crystal structure. From the Gallium nitride article on Wikipedia.
In which decade?
Gallium nitride is a binary III/V direct bandgap semiconductor commonly used in blue light-emitting diodes since the ____s.
Answer
1990s. Gallium nitride is a binary III/V direct bandgap semiconductor commonly used in blue light-emitting diodes since the 1990s. From the Gallium nitride article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Binary star. Binary star 82 · Fábio Coentrão 77 · Gallium nitride 74 · Coupe 71 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.
- The compound is a very hard material that has a Wurtzite crystal structure.
- Its wide band gap of 3.4 eV affords it special properties for applications in optoelectronics, high-power and high-frequency devices.
- For example, GaN is the substrate that makes violet laser diodes possible, without requiring nonlinear optical frequency doubling.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Gallium nitride 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 74 and blocks with 84: each hit it takes is cut by 34 %.
How to get Gallium nitride
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 Gallium nitride in the power ranking, all domains together.
- Open worldUncommon · Arts · ATK 81 DEF 77
- Fort Smith, ArkansasUncommon · Society · ATK 80 DEF 78
- Fábio CoentrãoUncommon · Society · ATK 77 DEF 81
- Heat transferUncommon · Science · ATK 80 DEF 78
- Humboldt University of BerlinUncommon · Society · ATK 80 DEF 78
- Hydrogen bondUncommon · Science · ATK 76 DEF 82
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Credits
Text : Wikipedia, Gallium nitride (revision), CC BY-SA 4.0. Photo : https://commons.wikimedia.org/wiki/User:Solid_State, CC BY-SA 4.0, Wikimedia Commons.
