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WikiCards · Card list · Science cards · Redshift
Rare card · Science
Redshift, a Rare card
In physics, a redshift is an increase in the wavelength, or equivalently, a decrease in the frequency, of electromagnetic radiation.
- Rarity
- Rare
- Domain
- Science
- ATK
- 83
- DEF
- 92
- Power
- 175
- Wikipedia reads a year
- 230,000
Power 175 (ATK + DEF): stronger than 90 % of WikiCards cards.
Redshift quiz: 3 questions
Three questions on the Redshift card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
The opposite change, a decrease in wavelength and increase in frequency and energy, is known as a ______.
Answer
blueshift. The opposite change, a decrease in wavelength and increase in frequency and energy, is known as a blueshift. From the Redshift article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Brown dwarf. Brown dwarf 92 · Commodore 64 88 · Redshift 83 · Printing press 79 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Printing press. Printing press 430,000 · Boron 310,000 · Redshift 230,000 · Creativity 170,000 Wikipedia reads over a year.
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 opposite change, a decrease in wavelength and increase in frequency and energy, is known as a blueshift.
- Three forms of redshift occur in astronomy and cosmology: Doppler redshifts due to the relative motions of radiation sources, gravitational redshift as radiation escapes from gravitational potentials, and cosmological redshifts caused by the universe expanding.
- The value of a redshift is often denoted by the letter z, corresponding to the fractional change in wavelength, and by the wavelength ratio 1 + z.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Redshift article was read about 230,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 83 and blocks with 92: each hit it takes is cut by 37 %.
How to get Redshift
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 Redshift in the power ranking, all domains together.
- GrasshopperRare · Nature · ATK 81 DEF 94
- GrenobleRare · Society · ATK 83 DEF 92
- Jan van EyckRare · Arts · ATK 77 DEF 98
- Robert CliveRare · History · ATK 84 DEF 91
- Are You ExperiencedRare · Arts · ATK 84 DEF 91
- Zhuge LiangRare · History · ATK 92 DEF 83
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Redshift (revision), CC BY-SA 4.0. Photo : Georg Wiora ( Dr. Schorsch ) created this image from the original JPG. Derivative work: Ke, CC BY-SA 3.0, Wikimedia Commons.
