The Internet & WebText Encoding

Emoji Are Secret Sums

A family emoji is several emoji glued together

You send one little picture. Your friend's phone shows two. Nobody edited the message, so what actually traveled between you?

You'll find out

  • What a phone really sends for an emoji
  • How four people become one picture
  • Why one emoji can be too long to fit

Why it matters

It explains emoji that arrive as two, messages that break a length limit, and why flags are missing on some devices.

About 3 min6 interactive slides · 5 questionsLesson 111 · Zone 13

Play this lesson

Free to play in your browser or on iPhone

More in this zone

  1. 109Planetary ScienceSaturn Would FloatThe giant planet is less dense than water
  2. 110FractalsRandom Dots Draw a TriangleA game of chance draws a perfect fractal
  3. 112WavesCount the ThunderLightning tells you how far away the storm is
  4. 113Engineering DesignWhy Manholes Are RoundA round cover can never fall into its own hole
  5. 114GeometryThe Drill That Makes Square HolesA rounded triangle can drill an almost square hole
  6. 115ProbabilityWhy Casinos Always WinOver enough bets, a small edge becomes a certainty
  7. 116Music AcousticsWhy Some Notes Sound Good TogetherPleasant chords hide simple ratios
  8. 117Computing HistoryThe First Bug Was a Real MothIn 1947 engineers taped a moth into their logbook