Derivation
The angle to the maxima depends on the wavelength of the light and the separation of the slits. We can derive an equation that links them by taking a closer look at two neighbouring waves going to the first-order maximum.
The distance to the screen is so much bigger than the distance between two slits that emerging waves appear to be parallel and can be treated that way.
Consider the triangle to the right.
For the n_th order the opposite side of the triangle becomes _nλ, making the equation:
| **Section 4 | Scalars and Vectors | |
|---|---|---|
| Lesson 1 | ||
| Learning Outcomes | To know the difference between scalars and vectors and be able to list some examples of each | |
| To be able to add vectors by scale drawing | ||
| To be able to add negative vectors by scale drawing | M.BENYOHAI |