What is X-Rays used for? Why? Can it be Bad?

-X-Rays help seeing the Internet Structure of Objects and Materials, our Bodies Included -This can help seeing Broken Bones, as because it Absorbed the X-Rays, compared to Flesh which just Transmit it -Making an X-Rays Image just simply has Detector Plate behind the Object you want to see Inside. Bright Bits = Fewer X-Rays have got Through -Being Exposed to X-Rays can cause Cell Damage, so being Protected is very Key in it [Lead Aprons, Minimal Exposure]