“Know Before You Go” has five chapters that are listed below. Click on the desired title and, on the chapter page, click on the image to play the video. Click the “Full screen” icon in the lower, right-hand corner for best viewing. When the video ends, click your browser back arrow in the extreme top, left corner and choose your next chapter.

If you want to brush up on your knowledge of atoms and isotopes, our “Introduction” recommends that you play “A is for atom” next. If you are comfortable with your atomic knowledge, then we suggest you play “Nuclear History,” “Reactor Visit Preview” and “How is Was Built” in that order.

We believe your visit to B Reactor will be an interesting and educational experience. It is our hope that this introductory material will enhance your visit.