Relative Refractive Index
Whenever two materials touch the boundary between them will have a refractive index dependent on the refractive indices of the two materials. We call this the relative refractive index.
When light travels from material 1 to material 2 we can calculate the relative refractive index of the boundary using any of the following:
Relative Refractive Index, 1n2, has no units
Some questions may involve light travelling through several layers of materials. Tackle one boundary at a time.
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| Section 3 | Total Internal Reflection | |
|---|---|---|
| Lesson 5 | ||
| Learning Outcomes | To know what the critical angle is and be able to calculate it | |
| To be able to explain what fibre optics are and how they are used | ||
| To be able to explain how cladding helps improve the efficiency of a fibre optic | M.BENYOHAI |