Students on the leaves were completely stuck on the tb. We study the microstructures of alloys, and they look at samples with lead in a microscope. In lead, the core is heavy, a large section of capture, which means it accumulates cosmic radiation. Upon reaching a critical mass, it pulses out a large dose, and the optical system of the microscope focuses the radiation. He beats directly in the eye. The net will burn.
And even if you hold a lead battery in your hands for a long time, you can earn radiation disease.
I’m waiting for someone to tell me about it now.