This website requires a browser which supports HTML5.
Some elements of this site will not work correctly until you upgrade your browser.
100linespermm
300linespermm
Distancefromgratingtoscreen=2.70m
DiffractionGratingandRedLaserBeam
Screen
Gotogreenlaser
100linespermm
300linespermm
Distancefromgratingtoscreen=2.70m
DiffractionGratingandGreenLaserBeam
Screen
Gotoredlaser