View source for 5-WAC-06 Diffraction / Refraction Calculations

==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.

==[[Specifications|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===