I understand that electrons can be released from a material, such as metal, through the photoelectric effect. I also understand that some of them might "re-attach" themselves to the metal. For practical uses, it sounds like the electrons would be re-captured in some way, but for the electrons that are cast away - how far away can they go? Do they just float around in space forever? Or can they attach to other things? If they do not attach to something else, can they "die," or are they converted to different forms of energy eventually? I am very much a beginner to physics, but I can't seem to find an explanation of this anywhere so would appreciate any help. Thank you!