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Uncommon card · Society
Mandelstam variables, an Uncommon card
In theoretical physics, the Mandelstam variables are numerical quantities that encode the energy, momentum, and angles of particles in a scattering process in a Lorentz-invariant fashion.
- Rarity
- Uncommon
- Domain
- Society
- ATK
- 51
- DEF
- 23
- Power
- 74
- Wikipedia reads a year
- 22,000
Power 74 (ATK + DEF): stronger than 15 % of WikiCards cards.
Mandelstam variables quiz: 3 questions
Three questions on the Mandelstam variables card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
They are used for ______ processes of two particles to two particles.
Answer
scattering. They are used for scattering processes of two particles to two particles. From the Mandelstam variables article on Wikipedia.
In which decade?
The Mandelstam variables were first introduced by physicist Stanley Mandelstam in ____.
Answer
1950s. The Mandelstam variables were first introduced by physicist Stanley Mandelstam in 1958. From the Mandelstam variables article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Sony Xperia 1 V. Sony Xperia 1 V 54 · Mandelstam variables 51 · Banyan 46 · List of airlines of Vietnam 43 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.
- They are used for scattering processes of two particles to two particles.
- The Mandelstam variables were first introduced by physicist Stanley Mandelstam in 1958.
- If the Minkowski metric is chosen to be diag, the Mandelstam variables s, t, u are then defined by s = 2 c 2 = 2 c 2, t = 2 c 2 = 2 c 2, u = 2 c 2 = 2 c 2, where p1 and p2 are the four-momenta of the incoming particles and p3 and p4 are the four-momenta of the outgoing particles. s is also known as the square of the center-of-mass energy and t as the square of the four-momentum transfer.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Mandelstam variables article was read about 22,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 51 and blocks with 23: each hit it takes is cut by 9 %.
How to get Mandelstam variables
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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Credits
Text : Wikipedia, Mandelstam variables (revision), CC BY-SA 4.0. Photo : Original uploader was JabberWok ( talk ) at en.wikipedia, CC BY-SA 3.0, Wikimedia Commons.
