5-WAC-06 Diffraction / Refraction Calculations

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Outcomes

Common Learning Outcomes

  • Pupils can calculate refractive index.
  • Pupils can calculate critical angle.

Single Award Only

  • Pupils understand the phenomenon of diffraction.
  • Pupils understand the effect of gap width on diffraction effects.

Specification References

  • 3.14 recall that light waves are transverse waves which can be reflected, refracted and diffracted
  • 3.18 recall and use the relationship between refractive index, angle of incidence and angle of refraction
  • 3.22 recall and use the relationship between critical angle and refractive index

Starter

  • Elucidate existing knowledge of trigonometric functions.
  • Have pupils copy trig functions triangle into books.

Main Body of Lesson

Calculations

  • The emphasis of these calculations is on the sin and arcsin functions.

Plenary

Homework

Additional Information

Resources Required

Textbook References

Website References

Skills Addressed

Safety/Hazards

Notes