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Fringe Placer

Light passes two slits. Mark where each bright fringe will land.

Physics · Class 12 · Young's double slit · 9 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. First fringes: Fringe width: β = λD/d
  2. The third bright: Counting fringes from the centre
  3. Change two things: β grows with λ and shrinks with d
  4. Set the gap: Work backward to the slit gap
  5. Under water: In a liquid, the light's wavelength shrinks
  6. Two colours meet: Where two sets of fringes line up
  7. Dark in front of a slit: The path difference right in front of a slit
  8. Screen round the slits: Path differences run from −d to d
  9. Biprism: A biprism makes two slits from one