which occurs when an electrical charge — like a bolt of lightning — strikes a type of material and gets trapped. The material can be made of any type of insulating substance — like glass ...

which occurs when an electrical charge — like a bolt of lightning — strikes a type of material and gets trapped. The material can be made of any type of insulating substance — like glass ...

heated light. In the example above, someone has placed an insulating material (most likely glass or acrylic) under a device called acathode ray tube, which produces a powerful beam of negatively ...