Diffraction gratings
http://www.thephysicsaviary.com/Physics/Programs/Labs/EMSpectrum/index.html
Diffraction gratings
http://www.thephysicsaviary.com/Physics/Programs/Labs/EMSpectrum/index.html
Independence of horizontal/vertical motion
http://www.stmary.ws/HighSchool/Physics/home/animations3/Motion/HorizProjVx5.htm
Add different colours, explore uploaded image
http://www.physicsclassroom.com/Physics-Interactives/Light-and-Color/RGB-Color-Addition
Independence of horizontal/vertical motion
http://www.stmary.ws/HighSchool/Physics/home/animations3/horizProjectileDropped5.htm
Components of velocity
http://www.stmary.ws/HighSchool/Physics/home/animations3/Motion/VixViyComponents5.htm
Change uniform colors and see effect
http://www.physicsclassroom.com/Physics-Interactives/Light-and-Color/Painting-with-CMY
add vectors and see resultant
https://phet.colorado.edu/sims/html/vector-addition/latest/vector-addition_en.html
Color