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WikiCards · Card list · Science cards · Helmholtz free energy
Uncommon card · Science
Helmholtz free energy, an Uncommon card
In thermodynamics, the Helmholtz free energy is a thermodynamic potential that measures the useful work obtainable from a closed thermodynamic system at a constant temperature.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 66
- DEF
- 37
- Power
- 103
- Wikipedia reads a year
- 50,000
Power 103 (ATK + DEF): stronger than 45 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- The change in the Helmholtz energy during a process is equal to the maximum amount of work that the system can perform in a thermodynamic process in which temperature is held constant.
- At constant temperature, the Helmholtz free energy is minimized at equilibrium.
- In contrast, the Gibbs free energy or free enthalpy is most commonly used as a measure of thermodynamic potential when it is convenient for applications that occur at constant pressure.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Helmholtz free energy article was read about 50,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 66 and blocks with 37: each hit it takes is cut by 15 %.
How to get Helmholtz free energy
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, Helmholtz free energy (revision), CC BY-SA 4.0. Photo : Eric Gaba ( Sting - fr:Sting ), Public domain, Wikimedia Commons.
