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WikiCards · Card list · Science cards · Fine structure
Uncommon card · Science
Fine structure, an Uncommon card
In atomic physics, the fine structure describes the splitting of the spectral lines of atoms due to electron spin and relativistic corrections to the non-relativistic Schrödinger equation.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 64
- DEF
- 40
- Power
- 104
- Wikipedia reads a year
- 39,000
Power 104 (ATK + DEF): stronger than 45 % of WikiCards cards.
Fine structure quiz: 3 questions
Three questions on the Fine structure card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
A ______ relativistic formula was given by Arnold Sommerfeld in 1916.
Answer
successful. A successful relativistic formula was given by Arnold Sommerfeld in 1916. From the Fine structure article on Wikipedia.
In which decade?
It was first measured precisely for the hydrogen atom by Albert A. Michelson and Edward W. Morley in ____.
Answer
1880s. It was first measured precisely for the hydrogen atom by Albert A. Michelson and Edward W. Morley in 1887. From the Fine structure article on Wikipedia.
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 was first measured precisely for the hydrogen atom by Albert A. Michelson and Edward W. Morley in 1887.
- The explanation was first given by Niels Bohr in 1914, who suggested that the orbits of electrons in his Bohr model of the atom precessed due to relativistic effects.
- A successful relativistic formula was given by Arnold Sommerfeld in 1916.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Fine structure article was read about 39,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 64 and blocks with 40: each hit it takes is cut by 16 %.
How to get Fine structure
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
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Credits
Text : Wikipedia, Fine structure (revision), CC BY-SA 4.0. Photo : Johnwalton, CC BY 3.0, Wikimedia Commons.
