Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied.
2.0 Kiwi Bins with stem Sign, cart can easily support hundreds of kids, Each cart includes a pallet of replacement supplies (over 15,000 components in total, and sturdy tools to create almost any project, sign is dry erase, NGSS Aligned, Grades K-12, working in groups of 2-3