Contact mechanics, an Uncommon card

The card carries these facts from its Wikipedia article.

• A central distinction in contact mechanics is between stresses acting perpendicular to the contacting bodies' surfaces and frictional stresses acting tangentially between the surfaces.
• Normal contact mechanics or frictionless contact mechanics focuses on normal stresses caused by applied normal forces and by the adhesion present on surfaces in close contact, even if they are clean and dry.
• Frictional contact mechanics emphasizes the effect of friction forces.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Contact mechanics article was read about 61,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 81 and blocks with 83: each hit it takes is cut by 33 %.

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.

The cards just above and just below Contact mechanics in the power ranking, all domains together.