Spot the Subpixels
Use a magnifying glass or your phone's zoom to look closely at a screen and find the red, green and blue dots. Post a photo link or write-up.
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Tech · Facts & stats · iChallenge network
Daily facts and stats about television, plus real challenges to put them to work.
What was the standard aspect ratio of older, pre-widescreen television?
Traditional standard-definition TV pictures were 4 units wide for every 3 units tall.

One ranked attempt per day. Practice as much as you like.
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Use a magnifying glass or your phone's zoom to look closely at a screen and find the red, green and blue dots. Post a photo link or write-up.
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Pick one show or documentary episode a day and watch just that one. Check in once a day.
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Watch a nature or science documentary and post a short write-up of three facts you learned.
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Live counts from TVChallenge.com. All arena stats →
Earned on any arena, shown on your profile everywhere.
Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.
Fund a prize on TVChallenge.com and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
Play today's quiz round, post your score, and start a streak.
XP, levels, streaks and badges. Save your progress with an email and it follows you to every arena on the iChallenge network.
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.