For example, any object at room temperature or near room temperature.
Electromagnetic radiation
The sun gives out raidio waves = radiation lol notrealy :)
No, the sun is not really on fire. The sun is just made up of very hot gases the are so hot it gives off light from heat radiation.
The sun naturally gives off radiation through ultraviolet rays but the ozone layer around earth blocks most of the harmful radiation, a few years ago people using spray-cans with CFC's in them (chlorofluorocarbons) created a hole in the ozone layer over the arctic CFC's were banned but they did their damage.
The sun radiates ultra-violet and visible light.
Infra-Violet is below violet light,radiation,etc...
The sun gives off radiation. An x-ray machine gives off radiation.
Well the iPod touch gives off the least radiation ,while the iPad gives off the most radiation. For kids I recommend the iPod or use a computer at home . The iPod and the computer radiation is so low it is harmless.on the other hand the iPad gives of harmful radiation.
technetium gives off gamma radiation.
It's a semantic thing - by definition, if something gives out radiation, then it is radioactive. If an element gives off radiation, then it is a 'radioactive' element. If it does not give out radiation, then it is not 'radioactive'.
Electromagnetic radiation
overheating
Radium is an example
Radioactive
Dark Matter
Determined
Radioactive