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World 4 · Exam & Deep Optics · 7 min · PRO

Fibre Optics

Trapping light in a thread of glass

PRO · Light & Optics

World 4: Exam & Deep Optics is part of PRO

The first world of Light & Optics is free. PRO opens the other 43 lessons in 5 worlds — simulations, quizzes and all.

  • The Critical Angle
  • Total Internal Reflection
  • Prisms in Instruments
  • The Refracting Telescope
  • The Compound Microscope
PRO includes
  • All 26 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

Unlock Light & OpticsTry the free world
← Total Internal ReflectionPrisms in Instruments →

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