Single Slit Diffraction of 532 nm Laser 

In the video, I shine a 532 nm laser into a diffraction grate (triangular device). 532 nm is in the green wavelength of visible light. The diffraction grate is also used to observe wavelengths of visible light if pointed at an incandescent bulb. Be careful not to hurt your eyes. It could be used for other wavelengths of light, but our eyes can only see 700nm to 400nm approximately. Once the green laser shines into the diffraction grate, the result is a single slit diffraction. With a bright peak, then dimmer peaks separated by some distance. This distance between bright peaks is dependent on how far away the single slit diffraction is from the wall. The farther the single slit is from wall, smaller the distance between bright peaks, and vice versa.