Radioactive – is a sign of biological danger. In its majority it is used in different laboratories that work with dangerous elements etc. Also this radioactive sign can be seen in a variety of video games. On this site you can find this sign in different resolutions to match all lap tops and computer screen sizes. All the images and wallpapers are of a very high quality and very bright as the main color is originally orange. That would be cool to have such wallpapers especially if you work in a scientific sphere or just want to make your computer “untouchable”.