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Uncommon card · Society
Astronomical spectroscopy, an Uncommon card
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, ultraviolet, X-ray, infrared and radio waves that radiate from stars and other celestial objects.
- Rarity
- Uncommon
- Domain
- Society
- ATK
- 76
- DEF
- 86
- Power
- 162
- Wikipedia reads a year
- 21,000
Power 162 (ATK + DEF): stronger than 85 % of WikiCards cards.
Astronomical spectroscopy quiz: 3 questions
Three questions on the Astronomical spectroscopy card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Spectroscopy can show the ______ of motion towards or away from the observer by measuring the Doppler shift.
Answer
velocity. Spectroscopy can show the velocity of motion towards or away from the observer by measuring the Doppler shift. From the Astronomical spectroscopy article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Economy of South America. Economy of South America 86 · Vanderlei Luxemburgo 79 · Astronomical spectroscopy 76 · The Smart Set 71 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Vanderlei Luxemburgo. Vanderlei Luxemburgo 46,000 · Economy of South America 27,000 · Astronomical spectroscopy 21,000 · Paddington, Queensland 8,200 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.
- A stellar spectrum can reveal many properties of stars, such as their chemical composition, temperature, density, mass, distance and luminosity.
- Spectroscopy can show the velocity of motion towards or away from the observer by measuring the Doppler shift.
- Spectroscopy is also used to study the physical properties of many other types of celestial objects such as planets, nebulae, galaxies, and active galactic nuclei.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Astronomical spectroscopy article was read about 21,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 76 and blocks with 86: each hit it takes is cut by 34 %.
How to get Astronomical spectroscopy
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 Society cards
Cards close in power
The cards just above and just below Astronomical spectroscopy in the power ranking, all domains together.
- Gunpowder artillery in the Middle AgesUncommon · History · ATK 72 DEF 90
- Intensive farmingUncommon · Nature · ATK 79 DEF 83
- Economy of South AmericaUncommon · Society · ATK 86 DEF 76
- Toronto District School BoardUncommon · Society · ATK 85 DEF 77
- Agricultural pollutionCommon · Science · ATK 77 DEF 85
- Asteroid familyCommon · Science · ATK 81 DEF 81
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
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Credits
Text : Wikipedia, Astronomical spectroscopy (revision), CC BY-SA 4.0. Photo : Julius Scheiner, Public domain, Wikimedia Commons.
