Before revision: [[ In nuclear engineering, neutrons which have not yet undergone a collision are termed the 1st generation, those which have undergone a single collision the 2nd generation, those which have undergone two collisions the 3rd generation, and so on.
After revision: File:File:Example.jpgFile:File:Example.jpgFile:File:Example.jpg[[ In nuclear engineering, neutrons which have not yet undergone a collision are termed the 1st generation, those which have undergone a single collision the 2nd generation, those which have undergone two collisions the 3rd generation, and so on.