Diagram of a blazed grating. Incident light reflects at the same angle (black lines), but a small portion of the light is refracted as coloured light (red and blue lines). The large number of parallel mirrors means that these small amounts of light can be focused and visualized by tilting the grating.
Diagram of a blazed grating. Incident light reflects at the same angle (black lines), but a small portion of the light is refracted as coloured light (red and blue lines). The large number of parallel mirrors means that these small amounts of light can be focused and visualized by tilting the grating.
Diagram of a blazed grating. Incident light reflects at the same angle (black lines), but a small portion of the light is refracted as coloured light (red and blue lines). The large number of parallel mirrors means that these small amounts of light ca...