Tape, X-Rays, and Why Physics Is Awesome

Check this out-

We saw this in one of my classes earlier today and I haven't gotten over it. What you're basically seeing is doing something very simple in unrolling tape and releasing ~50keV of energy in x-rays. That is a lot of energy in there, and no one knows how or why it would be so concentrated.

And this is why I love physics. Because there is always something new and fascinating that shows up no matter how much you think you have things figured out.